Collagen & Your Skin: The Science Behind Spa Anti-Aging Treatments

Quick Answer: Collagen is the primary structural protein in skin, responsible for firmness, elasticity, and youthful appearance. Production peaks in your early 20s and declines roughly 1% per year thereafter, accelerated by UV exposure, smoking, sugar, and stress. Spa anti-aging treatments -- including microneedling, radiofrequency, laser therapy, PRP, and LED light therapy -- work by stimulating your body's natural collagen production through controlled tissue injury, thermal remodeling, or growth factor signaling. Clinical evidence supports these approaches, with microneedling showing up to 400% increases in collagen deposition and radiofrequency demonstrating measurable skin tightening in peer-reviewed studies. Oral collagen supplements provide additional support, with meta-analyses confirming improvements in hydration and elasticity.

Every anti-aging treatment offered at a spa ultimately comes down to one molecule: collagen. Whether a provider is performing microneedling, radiofrequency skin tightening, a chemical peel, PRP therapy, or LED light treatment, the fundamental goal is the same -- stimulate your body to produce more collagen, protect the collagen you already have, or both.

Understanding collagen science is not just academic exercise. It is the single most useful framework for evaluating which spa treatments are worth your time and money, which marketing claims are grounded in reality, and why some treatments deliver dramatic results while others barely move the needle.

This guide breaks down the science in a way that empowers you to have informed conversations with your esthetician or dermatologist and make treatment decisions based on biology rather than buzzwords.

What Is Collagen, Exactly?

Collagen is the most abundant protein in the human body, comprising approximately 30% of total body protein and 70-80% of the dry weight of skin. The word comes from the Greek "kolla," meaning glue, which is apt -- collagen is essentially the biological glue that holds your body together [1].

Collagen Structure

Collagen molecules have a distinctive triple-helix structure: three polypeptide chains wound around each other like a rope. This triple helix provides extraordinary tensile strength -- gram for gram, type I collagen fibers are stronger than steel. In skin, these fibers form a dense, interlocking network within the dermis (the thick middle layer of skin) that provides structural support, resilience, and the ability to "bounce back" from mechanical deformation.

Types of Collagen in Skin

There are at least 28 identified types of collagen in the human body, but skin primarily contains three:

Type I Collagen accounts for approximately 80% of dermal collagen. It provides the dense, structural framework that gives skin its firmness and tensile strength. Type I collagen is the primary target of most anti-aging treatments.

Type III Collagen comprises approximately 15% of dermal collagen. It is thinner and more pliable than type I, providing flexibility and elasticity. Type III collagen is predominant in young skin and in the early stages of wound healing. As skin ages, the ratio shifts from type III to type I.

Type IV Collagen forms the basement membrane, the thin layer that separates the epidermis (outer skin layer) from the dermis. It plays a critical role in skin integrity and nutrient exchange between skin layers.

The Collagen Production Process

Collagen is produced by fibroblasts, specialized cells within the dermis. The production process involves several steps:

Transcription: Fibroblasts read the DNA instructions for collagen production and create messenger RNA.
Translation: Ribosomes use the mRNA template to assemble procollagen, the precursor molecule.
Hydroxylation: Procollagen undergoes chemical modification (hydroxylation) that requires vitamin C as a cofactor -- which is why vitamin C deficiency (scurvy) causes collagen-related tissue breakdown.
Triple Helix Assembly: Three procollagen chains wind together to form the characteristic triple helix.
Secretion and Processing: The procollagen molecule is secreted outside the cell, where enzymes trim its ends, converting it to tropocollagen.
Cross-linking: Tropocollagen molecules self-assemble into collagen fibrils, which then cross-link into fibers, creating the strong, resilient dermal matrix.

This entire process requires adequate supplies of amino acids (particularly glycine, proline, and hydroxyproline), vitamin C, zinc, and copper. Deficiency in any of these nutrients can impair collagen synthesis.

How and Why Collagen Declines with Age

Understanding collagen loss is essential for understanding why anti-aging treatments work and when to start them.

The Timeline of Collagen Loss

Collagen production peaks in the late teens to early 20s. After approximately age 25, production begins declining at a rate of roughly 1-1.5% per year [2]. This means that by age 50, most people have lost 25-35% of their dermal collagen compared to their peak.

But the decline is not just about quantity. The quality and organization of collagen also deteriorate:

Cross-linking increases: Older collagen becomes excessively cross-linked, making it stiffer and less resilient.
Fragmentation increases: The ratio of intact collagen fibers to fragmented ones shifts unfavorably.
Fiber organization degrades: The orderly network of collagen fibers becomes increasingly disorganized.

Intrinsic vs. Extrinsic Aging

Collagen loss occurs through two parallel processes:

Intrinsic aging is the genetically programmed, time-dependent decline in collagen production. It accounts for approximately 10-20% of visible skin aging and is largely inevitable, though it can be modulated by lifestyle factors.

Extrinsic aging is caused by environmental factors, primarily ultraviolet radiation (photoaging), and accounts for approximately 80-90% of visible facial skin aging. UV radiation damages collagen in multiple ways:

Directly breaking collagen cross-links
Upregulating matrix metalloproteinases (MMPs), the enzymes that degrade collagen
Generating reactive oxygen species (free radicals) that damage collagen fibers
Suppressing new collagen synthesis by fibroblasts

Other Collagen-Degrading Factors

Beyond UV exposure, several lifestyle factors accelerate collagen loss:

Smoking: Reduces blood flow to skin, impairs vitamin C metabolism (needed for collagen synthesis), and generates free radicals. Studies show smokers have significantly less dermal collagen than non-smokers of the same age.
Sugar and advanced glycation end products (AGEs): Dietary sugar molecules can bind to collagen fibers (glycation), making them stiff, brittle, and resistant to normal turnover. This process accelerates after age 35.
Chronic stress: Elevated cortisol levels suppress collagen production and accelerate degradation.
Poor sleep: Growth hormone, a key stimulus for collagen synthesis, is primarily released during deep sleep. Chronic sleep deprivation impairs this repair cycle.
Alcohol: Dehydrates skin, generates free radicals, and impairs nutrient absorption necessary for collagen synthesis.

The Visible Consequences

The clinical manifestations of collagen loss are what we commonly recognize as aging:

Fine lines and wrinkles: Loss of dermal volume and structural support causes the overlying epidermis to fold and crease.
Skin laxity and sagging: Reduced collagen and elastin density allows gravity to pull skin downward.
Thinning skin: The dermis literally thins as collagen volume decreases, making skin more translucent and fragile.
Slower wound healing: Reduced fibroblast activity and collagen production mean that cuts, scrapes, and blemishes heal more slowly.
Loss of facial volume: The loss of dermal collagen contributes to the hollowing of cheeks, temples, and under-eyes that characterizes facial aging.

Spa Treatments That Stimulate Collagen Production

Modern spa and med spa treatments target collagen production through several distinct biological mechanisms. Understanding these mechanisms helps you evaluate which treatments are most appropriate for your specific concerns.

Microneedling (Collagen Induction Therapy)

Microneedling is perhaps the most aptly named anti-aging treatment -- its clinical name is literally "collagen induction therapy" (CIT), which tells you exactly what it does.

How it works: A device studded with fine needles (0.5-2.5 mm in length) creates thousands of microscopic puncture wounds in the skin. These controlled micro-injuries trigger the wound-healing cascade: inflammation, proliferation, and remodeling. During the proliferative phase, fibroblasts ramp up collagen and elastin production to repair the "damaged" tissue. During the remodeling phase (which continues for months after treatment), new collagen fibers are organized into the dermal matrix [3].

Clinical evidence: A comprehensive review published in PMC found that microneedling demonstrates significant effectiveness in treating a wide range of dermatological conditions, including skin aging, with studies showing increases in collagen deposition of up to 400% at six months post-treatment [3]. Histological analysis (microscopic examination of skin biopsies) consistently shows increased type I and type III collagen in the dermis following microneedling.

What to expect: Treatments take 30-60 minutes. Skin appears red and slightly swollen for one to three days (similar to a mild sunburn). Most treatment protocols recommend three to six sessions spaced four to six weeks apart for optimal results, with improvement continuing for up to six months after the final session. Learn more about what to expect in our microneedling guide.

Radiofrequency (RF) Skin Tightening

Radiofrequency treatments use electromagnetic energy to heat the deep layers of skin, triggering a two-phase collagen response.

How it works: RF devices deliver targeted thermal energy to the dermal layer, heating collagen fibers to 65-75 degrees Celsius. This heat causes two distinct effects. First, existing collagen fibers contract (denature), producing an immediate -- though temporary -- tightening effect. Second, the thermal injury stimulates neocollagenesis (new collagen formation) over the following weeks and months, producing gradual, cumulative improvement [4].

Different RF modalities offer different depth profiles:

Monopolar RF: Achieves deep tissue penetration up to 20 mm, suitable for body tightening and deep facial remodeling.
Bipolar RF: Offers localized treatment at 1-4 mm depth, suitable for superficial facial tightening and texture improvement.
RF Microneedling: Combines the mechanical injury of microneedling with the thermal remodeling of radiofrequency. Insulated needles penetrate the skin and deliver RF energy at the needle tip, creating both a wound-healing response and a thermal collagen response simultaneously [4]. This combination is considered by many dermatologists to be the most effective non-surgical collagen-stimulation treatment currently available.

Clinical evidence: A comprehensive review published in PMC in 2025 documented that RF technology induces collagen contraction and stimulates neocollagenesis, with clinical studies demonstrating measurable improvements in skin laxity, wrinkles, and overall skin quality [4]. RF microneedling specifically has been shown to produce superior results compared to either microneedling or RF alone.

What to expect: Treatment takes 30-90 minutes depending on the area. Downtime is minimal for standalone RF (mild redness for a few hours) and slightly longer for RF microneedling (redness and swelling for one to three days). A series of three to four treatments is typical, with results continuing to improve for three to six months as new collagen matures. Explore our radiofrequency tightening treatment page for more details.

Chemical Peels

Chemical peels use acid solutions to remove damaged outer layers of skin, triggering regeneration from below.

How it works: Acids (glycolic, salicylic, trichloroacetic, or phenol, depending on peel depth) dissolve the intercellular bonds holding dead and damaged skin cells together. As these cells slough off, the skin initiates a repair response that includes new collagen synthesis in the dermis. The depth of the peel determines the intensity of the collagen response -- superficial peels stimulate modest collagen production, while medium and deep peels produce more significant dermal remodeling.

Clinical evidence: Multiple studies have demonstrated increased dermal collagen following chemical peels, with medium-depth peels (trichloroacetic acid at 20-35%) showing the most consistent collagen improvement in histological analysis. A series of superficial peels can achieve cumulative collagen benefits comparable to a single medium-depth peel, with less downtime per session.

What to expect: Superficial peels require minimal downtime (mild peeling for one to three days). Medium-depth peels involve more significant peeling and redness for five to seven days. Deep peels require extended recovery (two to three weeks). Results are dose-dependent -- more aggressive peels produce more collagen, but with more downtime and risk.

PRP (Platelet-Rich Plasma) Therapy

PRP uses concentrated growth factors from your own blood to stimulate collagen production.

How it works: Blood is drawn, centrifuged to concentrate the platelet-rich layer, and then applied to the skin (typically following microneedling) or injected. Platelets release growth factors including PDGF, TGF-B, VEGF, and EGF, which directly stimulate fibroblast activity and collagen synthesis. The growth factors essentially provide a concentrated version of the signals that normally drive wound healing and tissue regeneration.

Clinical evidence: Studies show that PRP enhances the collagen-stimulating effects of microneedling, with combination treatments producing greater improvements in skin texture, elasticity, and wrinkle depth than microneedling alone. The autologous nature of PRP (using the patient's own blood) provides an excellent safety profile.

What to expect: The treatment takes 60-90 minutes (including blood draw and processing time). Downtime is similar to microneedling: one to three days of redness and mild swelling. Three treatments spaced four to six weeks apart are typically recommended.

LED Light Therapy

LED (light-emitting diode) therapy uses specific wavelengths of light to stimulate cellular processes, including collagen production.

How it works: Red light (wavelengths of 630-700 nm) and near-infrared light (700-850 nm) penetrate into the dermis and are absorbed by chromophores within fibroblasts. This absorption stimulates mitochondrial activity, increasing ATP (cellular energy) production, which in turn powers increased collagen synthesis. The mechanism is non-thermal and non-ablative -- LED therapy stimulates cells without damaging them.

Clinical evidence: Multiple randomized controlled trials have demonstrated that red and near-infrared LED therapy increases collagen density in the dermis. A landmark study showed statistically significant improvement in skin complexion, skin feeling, and reduction in skin roughness and wrinkle severity after 30 twice-weekly LED treatments.

What to expect: LED therapy is painless, requires no downtime, and can be performed as a standalone treatment or as an add-on following other procedures. Sessions last 15-30 minutes. Because the stimulus is gentle, LED therapy typically requires more sessions to achieve visible results (12-20+ sessions) compared to more aggressive treatments.

Laser Resurfacing

Laser treatments use concentrated light energy to remove damaged skin layers and stimulate deep dermal collagen remodeling.

How it works: Ablative lasers (CO2, erbium:YAG) vaporize thin layers of skin, triggering an intensive wound-healing response that produces significant new collagen. Non-ablative lasers (1064 nm Nd:YAG, 1540 nm erbium glass) heat the dermis without removing the surface layer, stimulating collagen through thermal injury alone. Fractional lasers treat a fraction of the skin surface in a grid pattern, leaving islands of untreated skin between treatment spots to accelerate healing.

Clinical evidence: Laser resurfacing has the most extensive evidence base of any collagen-stimulating treatment. Ablative fractional lasers produce the most dramatic collagen remodeling, with histological studies showing new collagen formation extending several millimeters into the dermis. Non-ablative fractional lasers produce more modest but still significant collagen increases with considerably less downtime.

What to expect: Non-ablative laser treatments require minimal downtime (one to three days of redness). Ablative fractional treatments require five to ten days of healing. Fully ablative resurfacing requires two to three weeks of recovery. Results from ablative treatments can be dramatic and long-lasting, with a single treatment sometimes providing visible improvement for years.

Oral Collagen Supplements: Do They Work?

The oral collagen supplement market has exploded in recent years, and many spa clients ask whether supplements can complement their professional treatments.

The Evidence

A systematic review and meta-analysis published in PMC analyzed multiple randomized controlled trials and concluded that oral collagen supplementation -- particularly hydrolyzed collagen peptides -- demonstrates measurable improvements in skin hydration and elasticity [5]. A separate meta-analysis published in The American Journal of Medicine in 2025 confirmed these findings across a larger dataset [6].

Key findings from the clinical literature:

Hydrolyzed collagen peptides (typically taken at 2.5-10 grams daily) can improve skin elasticity within 4-8 weeks.
Improvements in hydration are among the earliest and most consistent benefits.
Wrinkle depth reduction has been observed in multiple studies, though the magnitude is more modest than professional treatments.
Marine-derived (fish) collagen peptides have shown comparable or superior absorption to bovine or porcine collagen [5].

One notable recent study published in Nature's npj Aging found that a collagen amino acid composition supplementation not only improved skin parameters but also reduced markers of biological aging, suggesting systemic anti-aging benefits beyond skin appearance [7].

Limitations

The evidence, while positive, comes with caveats:

Study sizes are generally small (20-100 participants)
Study durations vary significantly (4-24 weeks)
Different collagen sources and doses make direct comparisons difficult
The supplement industry is less regulated than pharmaceuticals, and product quality varies
Whether the observed benefits are specifically due to collagen or could be achieved with any high-quality protein source remains debated

Practical Recommendation

Oral collagen supplements appear to be a reasonable complementary strategy -- not a replacement for professional treatments, but a potential way to support collagen production from the inside while professional treatments stimulate it from the outside. Marine-derived hydrolyzed collagen peptides at 5-10 grams daily, taken consistently for at least 8-12 weeks, represent the protocol best supported by current evidence.

Topical Ingredients That Support Collagen

Several topical skincare ingredients have clinical evidence supporting their ability to stimulate or protect collagen.

Retinoids (Vitamin A Derivatives)

Retinoids are the most extensively studied and most effective topical anti-aging ingredients. Tretinoin (prescription retinoid) and retinol/retinal (over-the-counter forms) stimulate collagen production by binding to retinoic acid receptors in fibroblasts, directly upregulating collagen gene expression. Tretinoin has been shown in multiple long-term studies to increase dermal collagen by 80% or more with consistent use over 10-12 months.

Vitamin C (L-Ascorbic Acid)

Vitamin C is a required cofactor for collagen synthesis and a potent antioxidant that protects existing collagen from free radical damage. Topical application of stable vitamin C formulations (typically 10-20% L-ascorbic acid at pH 2.5-3.5) has been shown to increase collagen synthesis in human skin.

Peptides

Certain peptides -- particularly palmitoyl pentapeptide-4 (Matrixyl) and copper peptides -- have demonstrated the ability to stimulate fibroblast activity and collagen production in vitro and in small clinical studies. While the evidence is less robust than for retinoids or vitamin C, peptides offer a gentler alternative for sensitive skin types.

Niacinamide (Vitamin B3)

Niacinamide stimulates collagen production, improves skin barrier function, and reduces hyperpigmentation. At concentrations of 4-5%, it has been shown to improve skin elasticity and reduce fine lines in clinical trials.

Sunscreen

Arguably the most important "anti-aging product" is daily broad-spectrum sunscreen. By preventing UV-induced collagen degradation, consistent sunscreen use preserves existing collagen far more effectively than any treatment can rebuild it. Studies show that daily sunscreen use can reduce signs of photoaging by up to 24% over 4.5 years.

Building a Collagen-Optimized Treatment Plan

The most effective approach to collagen maintenance combines professional treatments, topical skincare, and lifestyle factors.

In Your 20s: Prevention Focus

Daily broad-spectrum sunscreen (SPF 30+)
Introduction of retinol (start low, build tolerance)
Vitamin C serum in the morning
Annual or biannual professional facial with gentle exfoliation
Establish baseline skin analysis for tracking changes over time

In Your 30s: Early Intervention

Continue all preventive measures from your 20s
Introduction of professional microneedling or light chemical peels (two to four sessions annually)
Consider LED light therapy as a low-risk maintenance treatment
Upgrade to prescription retinoid (tretinoin) if tolerated
Optional: begin oral collagen supplementation

In Your 40s: Active Stimulation

Transition to more intensive professional treatments: RF microneedling, medium-depth peels, or non-ablative laser
PRP therapy as an add-on to microneedling for enhanced results
Three to six professional collagen-stimulating treatments annually
Continue retinoid, vitamin C, and sunscreen regimen
Address glycation with reduced sugar intake and antioxidant supplementation

In Your 50s and Beyond: Comprehensive Approach

Consider ablative fractional laser or deep RF treatments for more significant remodeling
Regenerative treatments (PRP, exosomes) become more relevant as natural regenerative capacity declines
Combination protocols that layer multiple collagen-stimulating modalities
Maintain aggressive sun protection and topical active regimen
Consult with a dermatologist about combining aesthetic treatments with medical-grade skincare

The Bottom Line

Collagen is not a marketing buzzword. It is a specific, well-characterized protein whose decline is the single largest contributor to visible skin aging. The good news is that modern spa and med spa treatments can measurably stimulate your body's collagen production through well-understood biological mechanisms.

The key principles to remember:

Prevention is more effective than restoration. Protecting existing collagen (sunscreen, antioxidants, lifestyle) delivers more value per dollar than any treatment can provide in rebuilding lost collagen.
Consistency beats intensity. A moderate, regular treatment schedule produces better long-term results than occasional aggressive interventions.
Combination works best. No single treatment or product optimizes collagen on its own. The most effective approach combines professional treatments, topical actives, sun protection, nutrition, and lifestyle factors.
Results take time. Collagen remodeling is a slow biological process. Most treatments require two to six months to show full results. Patience and realistic expectations are essential.
Start earlier than you think. Collagen begins declining in your mid-20s. Starting preventive measures early is far easier than trying to reverse years of accumulated loss.

Visit our research section for the latest peer-reviewed studies on collagen-stimulating treatments, or use our treatment finder to explore collagen-focused treatments available near you.

Frequently Asked Questions

At what age should I start collagen-stimulating treatments?

Collagen production begins declining around age 25, so preventive measures (daily sunscreen, topical retinol, antioxidants) should ideally start in your mid-20s. Professional collagen-stimulating treatments like microneedling and chemical peels become most valuable in your 30s, when cumulative collagen loss becomes clinically significant. There is no single "right age" to start -- it depends on your genetics, lifestyle, sun exposure history, and treatment goals. A consultation with a qualified esthetician or dermatologist can help you determine the appropriate time and treatment intensity for your individual situation. See our microneedling guide for treatment-specific recommendations.

Does drinking collagen actually help your skin?

Yes, according to the current balance of evidence. Multiple systematic reviews and meta-analyses of randomized controlled trials show that oral hydrolyzed collagen peptides (typically 2.5-10 grams daily for 8+ weeks) can measurably improve skin hydration and elasticity. The improvements are real but modest compared to professional treatments. Oral collagen is best viewed as a complement to -- not a replacement for -- professional collagen-stimulating treatments and a topical skincare regimen that includes retinoids and vitamin C.

Which spa treatment produces the most collagen?

Ablative fractional laser resurfacing produces the most dramatic collagen remodeling per session, followed by RF microneedling, standard microneedling, and medium-depth chemical peels. However, the "best" treatment depends on your tolerance for downtime, your skin type, your budget, and your specific concerns. RF microneedling often represents the best balance of efficacy and recovery time for most patients. Non-ablative treatments with minimal downtime, performed in a series, can also achieve significant cumulative collagen improvement. Explore our microneedling and radiofrequency tightening treatment pages for detailed comparisons.

Can you rebuild collagen after 50?

Yes, absolutely. While the rate of collagen synthesis slows with age, fibroblasts remain responsive to stimulation at any age. Clinical studies of microneedling, RF, and laser treatments include participants in their 50s, 60s, and beyond, with documented collagen improvement in all age groups. The response may be slower and less robust than in younger patients, which is why more intensive treatments (RF microneedling, ablative laser, PRP combinations) and longer treatment series are often recommended for older patients. Regenerative treatments like PRP and exosomes are particularly relevant for this age group, as they provide the growth factors and signaling molecules that aging fibroblasts increasingly lack.

How long do collagen-stimulating treatment results last?

Results from collagen-stimulating treatments typically become visible within two to eight weeks and continue improving for three to six months as new collagen matures. The longevity of results varies by treatment and individual factors. Microneedling results typically last six to twelve months before maintenance is needed. RF microneedling results can last one to two years. Ablative laser results are among the longest-lasting, with some patients maintaining improvement for two to five years. However, collagen continues to decline with age regardless of treatment, so periodic maintenance sessions are recommended to sustain results over time.

References

OAEP Publish. "Skin collagen through the lifestages: importance for skin health and beauty." Plastic and Aesthetic Research. https://www.oaepublish.com/articles/2347-9264.2020.153
MDPI. "Skin Aging and Type I Collagen: A Systematic Review of Interventions with Potential Collagen-Related Effects." Cosmetics, 2025. https://www.mdpi.com/2079-9284/12/4/129
PMC/NIH. "Microneedling in Dermatology: A Comprehensive Review of Applications, Techniques, and Outcomes." 2024. https://pmc.ncbi.nlm.nih.gov/articles/PMC11499218/
PMC/NIH. "The Landscape of Radiofrequency Technology for Skin Rejuvenation." 2025. https://pmc.ncbi.nlm.nih.gov/articles/PMC12743727/
PMC/NIH. "Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis." 2023. https://pmc.ncbi.nlm.nih.gov/articles/PMC10180699/
The American Journal of Medicine. "Effects of Collagen Supplements on Skin Aging: A Systematic Review and Meta-Analysis of Randomized Controlled Trials." 2025. https://www.amjmed.com/article/S0002-9343(25)00283-9/abstract
Nature. "A collagen amino acid composition supplementation reduces biological age in humans and increases health and lifespan in vivo." npj Aging, 2025. https://www.nature.com/articles/s41514-025-00280-7
PMC/NIH. "Collagen Supplements for Aging and Wrinkles: A Paradigm Shift in the Field of Dermatology and Cosmetics." 2022. https://pmc.ncbi.nlm.nih.gov/articles/PMC8824545/
Cleveland Clinic. "Radio Frequency (RF) Skin Tightening: Benefits & Dangers." https://my.clevelandclinic.org/health/treatments/24683-radio-frequency-rf-skin-tightening
Spring Street Dermatology. "The Science Behind RF Microneedling and Collagen Production." https://springstderm.com/the-science-behind-rf-microneedling-and-collagen-production/

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Anti-aging treatments should be discussed with a qualified dermatologist or licensed esthetician. Individual results vary based on age, skin type, treatment protocol, and lifestyle factors. SpaLens may earn a commission from products or services mentioned in this article. For full details, see our Terms & Conditions.

-- The SpaLens Team