💡 What You Need to Know Right Away
- Oral collagen supplements (2.5-10g daily) significantly improve skin hydration and elasticity based on meta-analysis of 26 RCTs with 1,721 participants[Evidence: A][2]
- Visible wrinkle reduction of up to 35-46% occurs after 8-12 weeks of consistent supplementation[Evidence: B][3][8]
- Industry-funded studies show more positive results than independent research. High-quality independent trials found no significant effect[Evidence: A][1]
- Collagen peptides are generally safe with no reported adverse events in clinical trials at standard doses[Evidence: D][6]
If you have been searching for ways to improve your skin's appearance, you have likely encountered collagen supplements. The promise of firmer, more hydrated, younger-looking skin is appealing. However, the scientific evidence presents a more nuanced picture than marketing claims suggest.
It is common to feel overwhelmed when researching collagen for skin rejuvenation. Headlines range from "miracle anti-aging solution" to "expensive waste of money." This guide cuts through the confusion by examining what 17 peer-reviewed studies actually show. You will learn how collagen works, whether it delivers real benefits, what dosage to consider, and who should avoid it entirely.
❓ Quick Answers
What is collagen for skin rejuvenation?
Collagen for skin rejuvenation refers to oral hydrolyzed collagen peptide supplements taken to improve skin aging signs. Collagen is the primary structural protein in skin, providing firmness and elasticity. Starting around age 25, collagen production declines approximately 1-1.5% annually. Supplements aim to boost skin hydration and reduce wrinkles[Evidence: A][4].
How does collagen work for skin?
Collagen peptides are broken down during digestion into smaller peptides like Pro-Hyp and Gly-Pro-Hyp. These bioactive peptides enter the bloodstream and may stimulate fibroblast cells to produce new collagen. Research shows they activate the TGF-β/Smad pathway and inhibit collagen-degrading enzymes MMP-1 and MMP-3[Evidence: A][5].
What foods contain collagen?
Natural collagen sources include bone broth, chicken skin, fish skin, and pork skin. However, dietary collagen requires digestion before absorption. Vitamin C-rich foods (citrus, bell peppers, strawberries) support collagen synthesis as an essential cofactor. Combining vitamin C with collagen supplementation enhances dermis density and skin texture[Evidence: B][17].
What are the benefits of collagen for skin?
Clinical trials show collagen supplements may improve skin hydration, elasticity, and wrinkle appearance. A systematic review of 26 RCTs found significant improvements in hydration (Z=4.94, p<0.00001) and elasticity (Z=4.49, p<0.00001). One RCT showed 44.6% decrease in collagen fragmentation versus placebo[Evidence: A][2][Evidence: B][16].
How much collagen should I take daily?
Systematic reviews indicate optimal dosages range from 2.5-10g daily for 8-24 weeks. Most RCTs showing positive results used doses between 1-10g daily. A meta-analysis of 19 studies found 2.5-10g daily for 90 days effective for skin hydration, elasticity, and wrinkles[Evidence: A][2][4].
Should I take collagen supplements?
The decision depends on your expectations and budget. While multiple RCTs show benefits, a 2025 meta-analysis found industry-funded studies showed more positive results than independent research. High-quality independent trials showed no significant effect. Consider collagen as one option among several, not a guaranteed solution[Evidence: A][1].
How long does it take for collagen to work?
Clinical trials suggest hydration improvements may appear within 4-8 weeks. Visible wrinkle reduction typically requires 8-12 weeks of consistent daily use. One 12-week RCT showed 35% reduction in wrinkle score with marine collagen supplementation. Results vary between individuals[Evidence: B][8].
Is hydrolyzed collagen better than regular collagen?
Yes. Hydrolyzed collagen (collagen peptides) has been enzymatically broken down into smaller peptides with higher bioavailability. Pro-Hyp dipeptide shows 19.3% oral bioavailability while Gly-Pro-Hyp tripeptide shows 4.4%. These peptides remain stable in gastrointestinal fluid for over 2 hours and are absorbed intact[Evidence: C][12].
Collagen
for Skin
Discover the primary structural protein that keeps your skin firm, youthful, and resilient. Explore the science behind collagen supplementation.
🔬 How Does Collagen Work?
Understanding how oral collagen supplements might benefit skin requires examining the journey from supplement to skin cell. Think of collagen peptides as tiny messengers that deliver building instructions to your skin's construction workers (fibroblasts).
When you consume hydrolyzed collagen, digestive enzymes break it down into smaller peptides and amino acids. Two key peptides survive this process: Pro-Hyp (prolyl-hydroxyproline) and Gly-Pro-Hyp (glycyl-prolyl-hydroxyproline). Studies demonstrate Pro-Hyp has 19.3% absolute oral bioavailability while Gly-Pro-Hyp has 4.4% bioavailability. Peak plasma concentrations occur 100-130 minutes after ingestion[Evidence: C][12].
Here is where the mechanism becomes interesting. These absorbed peptides do not simply become new collagen. Instead, they act like a foreman on a construction site, signaling fibroblast cells to ramp up production. Research shows collagen peptides stimulate the TGF-β/Smad signaling pathway, which activates collagen synthesis[Evidence: A][5].
Simultaneously, these peptides inhibit collagen-degrading enzymes called matrix metalloproteinases (MMP-1 and MMP-3). Think of this as reducing the demolition crew while increasing the builders. In vitro studies found Pro-Hyp enhances fibroblast proliferation by 1.5-fold and increases hyaluronic acid synthesis 3.8-fold at 200 nmol/mL concentration[Evidence: C][11].
One critical consideration: collagen peptides with higher Pro-Hyp and Hyp-Gly content produce greater improvements in skin moisture, elasticity, wrinkles, and roughness. Not all collagen supplements are equal. The bioactive peptide content matters significantly for outcomes[Evidence: B][7].
Vitamin C plays an essential cofactor role in this process. It catalyzes hydroxylation of proline and lysine residues via prolyl hydroxylase and lysyl hydroxylase enzymes. Without adequate vitamin C, collagen synthesis fails completely (as seen in scurvy). A 2024 RCT found 5g hydrolyzed collagen combined with 80mg vitamin C enhanced dermis density and reduced wrinkle severity in women aged 40-65[Evidence: B][17].
📊 Dosage and How to Use
Determining the right collagen dosage depends on your specific goals and the evidence supporting different amounts. The following table summarizes dosages used in clinical trials that showed positive outcomes.
| Purpose/Condition | Dosage | Duration | Evidence |
|---|---|---|---|
| General skin anti-aging | 2.5-10g/day | 8-24 weeks | [A][2] |
| Skin hydration, elasticity, wrinkles | 2.5-10g/day | 90 days | [A][4] |
| Wrinkle and elasticity improvement | 1.65g/day | 8 weeks | [B][3] |
| Skin moisture and elasticity | 5g/day | 8 weeks | [B][7] |
| Wrinkle reduction (marine collagen) | 10g/day | 12 weeks | [B][8] |
| Crow's feet and skin roughness | 1g/day | 12 weeks | [B][14] |
| Skin density and texture (with vitamin C) | 5g + 80mg vitamin C/day | 16 weeks | [B][17] |
Recommended Maximum Intake
Based on systematic reviews, the recommended maximum is 10g daily. No adverse events were reported at doses up to 10g in clinical trials lasting up to 24 weeks[Evidence: A][2][4].
Timing Considerations
Most clinical trials did not specify optimal timing. However, collagen peptides show peak plasma concentrations 100-130 minutes after ingestion[Evidence: C][12]. Taking collagen consistently at the same time daily ensures steady absorption. Many people prefer taking it in the morning with water or mixing powder into beverages.
⚠️ Risks, Side Effects, and Warnings
⚠️ Important Safety Information
- No reported adverse events with oral collagen supplementation at standard doses (2.5-10g daily)[6]
- Marine collagen may contain heavy metal contaminants including methylmercury and arsenic. Third-party testing recommended[10]
- Individuals with fish or shellfish allergies should avoid marine collagen sources
- Consult your healthcare provider before use if pregnant, breastfeeding, or taking medications
Side Effects by Frequency
A systematic review of dermatological applications documented no reported adverse events with oral collagen supplementation[Evidence: D][6]. However, specific frequency data has not been established in large-scale safety studies. Anecdotally reported effects include mild digestive discomfort and lingering taste with certain formulations.
Contamination Concerns
A 2025 safety study identified potential heavy metal contamination in marine and jellyfish collagen supplements. Researchers identified methylmercury and arsenic as specific concerns and recommended updated food safety regulations. Cumulative exposure from daily supplementation warrants consideration[Evidence: C][10]. Select supplements with third-party testing for heavy metals.
Contraindications
Individuals allergic to fish, shellfish, or bovine products should select collagen sources carefully or avoid supplementation. Those with histamine intolerance may experience symptoms, as collagen is high in histidine. Individuals with a history of keloid scarring should consult a dermatologist before use. Safety in pregnancy and lactation has not been established.
Monitoring Recommendations
Monitor for any digestive changes during the first 1-2 weeks of supplementation. Discontinue use and consult a healthcare provider if you experience persistent gastrointestinal symptoms, skin rashes, or allergic reactions. No specific biomarker monitoring protocols have been established for collagen supplementation.
🥗 Practical Ways to Use Collagen
How to Use This in Your Daily Life
Scenario 1: General Skin Health Maintenance
- Dose: 2.5-5g daily[2]
- Duration: 8-12 weeks minimum, ongoing use for maintained benefits
- Population: Healthy adults seeking preventative skin support
- Timing: Morning with water or mixed into coffee/smoothie
- What to track: Skin hydration feel, fine lines appearance
- Expected results: Improved skin hydration may be noticeable at 4-8 weeks[8]
Scenario 2: Wrinkle Reduction Focus
- Dose: 5-10g daily[4]
- Duration: 12 weeks minimum
- Population: Adults 40+ with visible wrinkles
- Timing: Daily, consistent timing
- What to track: Crow's feet depth, cheek wrinkle appearance
- Expected results: Up to 35% wrinkle score reduction at 12 weeks[8]; 9% wrinkle depth reduction at 8 weeks[3]
Scenario 3: Enhanced Protocol with Vitamin C
- Dose: 5g collagen + 80mg vitamin C daily[17]
- Duration: 16 weeks
- Population: Women 40-65 years
- Timing: With vitamin C-rich food or supplement
- What to track: Skin firmness, texture, dermis density (if measurable)
- Expected results: Enhanced dermis density and improved skin texture[17]
Practical Integration
Collagen powder dissolves easily in hot or cold liquids. Mix into morning coffee, smoothies, or water. Capsules offer convenience for travel. Store in a cool, dry place away from direct sunlight. Hydrolyzed collagen is generally tasteless and odorless.
Common Mistakes to Avoid
- Inconsistent dosing: Studies used daily dosing for 8-24 weeks[2]. Sporadic use may not achieve benefits.
- Expecting immediate results: Minimum 8 weeks needed for visible changes. Most studies showed best results at 12+ weeks.
- Ignoring vitamin C: Vitamin C is essential for collagen synthesis. Ensure adequate dietary or supplemental intake[17].
- Choosing low-quality products: Collagen peptides with higher Pro-Hyp and Hyp-Gly content produce better outcomes[7]. Look for third-party tested products.
⚖️ Collagen vs. Alternatives
Collagen supplements represent one approach among several evidence-based options for skin aging. Understanding how they compare helps you make an informed decision.
| Feature | Oral Collagen | Topical Retinol | Vitamin C Serum | Sunscreen |
|---|---|---|---|---|
| Evidence Strength | Moderate (mixed results)[1] | Strong (well-established) | Moderate-Strong | Strong (prevention) |
| Time to Results | 8-12 weeks | 4-12 weeks | 8-12 weeks | Prevention (ongoing) |
| Cost (Monthly) | $30-60 | $20-50 | $20-60 | $15-30 |
| Mechanism | Internal signaling | Direct cell turnover | Antioxidant + synthesis | UV damage prevention |
| Side Effects | Rare/mild | Dryness, irritation | Rare | Rare |
Retinol (vitamin A derivative) has stronger, more consistent evidence for anti-aging effects and directly stimulates cell turnover. Vitamin C serums provide antioxidant protection and support collagen synthesis topically. Sunscreen prevents the UV-induced collagen degradation that causes 80% of visible skin aging.
A comprehensive approach may combine multiple strategies. However, if choosing one intervention, sunscreen and retinol have more established evidence bases than oral collagen[Evidence: A][1].
What The Evidence Shows (And Doesn't Show)
What Research Suggests
- Meta-analysis of 26 RCTs with 1,721 patients found significant improvements in skin hydration (Z=4.94, p<0.00001) and elasticity (Z=4.49, p<0.00001) with 2.5-10g daily for 8-24 weeks[Evidence: A][2]
- RCT with 70 adults showed 9% reduction in wrinkle depth, 44% reduction in wrinkle area, and 46% reduction in wrinkle volume after 8 weeks[Evidence: B][3]
- 12-week RCT demonstrated 44.6% decrease in collagen fragmentation, 13.8% increase in hydration, and 22.7% increase in R2 elasticity index versus placebo[Evidence: B][16]
- Collagen peptides Pro-Hyp and Gly-Pro-Hyp are absorbed intact with 19.3% and 4.4% bioavailability respectively[Evidence: C][12]
- In vitro studies show Pro-Hyp increases fibroblast proliferation 1.5-fold and hyaluronic acid synthesis 3.8-fold[Evidence: C][11]
What's NOT Yet Proven
- Long-term efficacy beyond 24 weeks. Most studies lasted 8-12 weeks. Whether benefits persist or require ongoing supplementation remains unknown.
- Optimal dosage. Studies used 1-10g daily with varying results. No dose-response relationship has been established.
- Who responds best. Individual variation (responders vs. non-responders) has not been characterized. Predictors of benefit are unknown.
- How peptides reach dermis. Bioavailability studies confirm absorption into blood, but the mechanism by which circulating peptides reach skin at sufficient concentrations remains hypothetical.
- Effects in specific populations. No pediatric data. Pregnancy/lactation safety not established. Limited data on individuals over 70.
Where Caution Is Needed
- Industry-funded studies show more positive results than independent research. A 2025 meta-analysis found high-quality independent trials showed no significant effect[Evidence: A][1]
- Marine collagen products may contain methylmercury and arsenic contamination. Cumulative exposure from daily use is a concern[Evidence: C][10]
- Quality varies significantly between products. Collagen peptides with higher Pro-Hyp and Hyp-Gly content produce better outcomes[Evidence: B][7]
- Most clinical trials were conducted in Asian populations. Generalizability to other populations is uncertain.
Should YOU Try This?
Best suited for: Adults seeking modest improvements in skin hydration and elasticity who have realistic expectations, budget for 3+ months of supplementation, and understand evidence limitations. Those who have tried topical options and want to add an oral approach.
Not recommended for: Those allergic to fish, shellfish, or bovine products. Individuals with histamine intolerance, kidney disease, or scheduled surgeries. Pregnant or breastfeeding women without medical supervision. Those expecting dramatic transformation.
Realistic timeline: 4-8 weeks for potential hydration changes. 8-12 weeks minimum for possible wrinkle improvement. Results vary by individual and are not guaranteed.
When to consult a professional: Before starting if you have allergies, take medications, have health conditions, or are pregnant/breastfeeding. If you experience adverse reactions. For personalized anti-aging recommendations from a dermatologist.
Frequently Asked Questions
Does collagen really work for skin?
The evidence is mixed. A 2025 meta-analysis of 23 RCTs with 1,474 participants found collagen supplements significantly improved skin hydration, elasticity, and wrinkles in pooled analysis. However, the same study revealed a critical finding: industry-funded studies showed more positive results than independent research. High-quality independent trials showed no significant effect . This suggests publication bias may inflate reported benefits. Collagen may work for some individuals, but effects appear modest and inconsistent across high-quality studies.
When does our body start losing collagen?
Collagen production begins declining around age 25 at a rate of approximately 1-1.5% per year. By age 40, cumulative loss becomes visibly noticeable as decreased skin firmness and increased wrinkles. Women experience accelerated collagen loss during menopause, losing approximately 30% of dermal collagen in the first five years post-menopause due to declining estrogen levels. UV exposure, smoking, and high sugar intake further accelerate collagen degradation through oxidative stress and glycation processes .
Should I use collagen creams or take supplements?
Oral collagen supplements have more clinical evidence than topical collagen creams. Collagen molecules in creams are typically too large to penetrate the skin barrier effectively. Oral hydrolyzed collagen peptides are absorbed into the bloodstream and may signal fibroblasts to produce collagen . If choosing topical treatments, vitamin C serums and retinol have stronger evidence for stimulating collagen production in skin. For oral supplementation, hydrolyzed collagen peptides with documented bioavailability offer the best absorption profile .
What are better alternatives to collagen supplements?
Several alternatives have equal or stronger evidence. Topical retinoids (retinol, tretinoin) directly stimulate collagen production and have decades of research supporting anti-aging effects. Vitamin C serums protect against oxidative damage and serve as a cofactor for collagen synthesis . Sunscreen prevents 80% of visible skin aging by blocking UV-induced collagen degradation. Microneedling and radiofrequency treatments stimulate collagen through controlled injury. These alternatives may offer more predictable results than oral collagen supplementation.
What is the difference between Type 1 and Type 3 collagen?
Type I collagen comprises approximately 80-90% of dermal collagen and provides tensile strength and firmness to skin. Type III collagen contributes to skin's flexibility and elasticity. Both decrease with age, but Type III declines more rapidly. Most collagen supplements contain Type I collagen derived from bovine or marine sources. Some products include both types. Clinical trials showing skin benefits have used various collagen types, and no definitive evidence establishes one type as superior for skin rejuvenation specifically .
Are there side effects of taking collagen?
Clinical trials report minimal side effects. A systematic review found no reported adverse events with oral collagen supplementation at standard doses of 2.5-10g daily for 8-12 weeks . One RCT with 70 healthy adults over 8 weeks reported no adverse events . Anecdotal reports include mild digestive discomfort, feelings of fullness, and lingering aftertaste with certain products. Those with fish or shellfish allergies may react to marine collagen. Heavy metal contamination in some marine sources warrants selecting third-party tested products .
Who should not take collagen supplements?
Several groups should exercise caution or avoid collagen. Individuals allergic to fish, shellfish, or beef should avoid collagen derived from those sources. Those with histamine intolerance may experience symptoms since collagen contains histidine. People with kidney disease should consult their doctor as collagen is high in protein. Pregnant and breastfeeding women lack safety data and should consult healthcare providers. Those prone to keloid scarring should discuss with a dermatologist before use. Anyone scheduled for surgery should inform their surgeon, as collagen may theoretically affect wound healing.
What is the best time to take collagen?
Clinical trials did not establish an optimal timing, and most studies simply required daily consumption. Collagen peptides reach peak plasma concentrations 100-130 minutes after ingestion . Consistency matters more than specific timing. Taking collagen at the same time daily helps establish a routine. Some prefer morning on an empty stomach for absorption, while others take it with breakfast to avoid any digestive sensitivity. The peptides remain stable in gastrointestinal fluid for over 2 hours .
Does vitamin C help collagen production?
Yes, vitamin C is essential for collagen synthesis. It serves as a required cofactor for prolyl hydroxylase and lysyl hydroxylase, enzymes that hydroxylate proline and lysine residues during collagen formation. Without adequate vitamin C, collagen synthesis fails (as demonstrated in scurvy). A 2024 RCT tested 5g hydrolyzed collagen combined with 80mg vitamin C in 87 women aged 40-65 over 16 weeks. The combination enhanced dermis density, improved skin texture, and reduced wrinkle severity . Pairing collagen with vitamin C may optimize results.
Is marine or bovine collagen better for skin?
Both marine and bovine collagen show skin benefits in clinical trials. Marine collagen may have slightly smaller peptide size and potentially higher bioavailability, though direct head-to-head comparisons are limited. One RCT using marine collagen showed 35% wrinkle score reduction at 12 weeks . However, a 2025 safety study identified potential heavy metal contamination (methylmercury, arsenic) in fish and jellyfish collagen products . Bovine collagen may have fewer contamination concerns. Choose third-party tested products regardless of source.
Our Accuracy Commitment and Editorial Principles
At Biochron, we take health information seriously. Every claim in this article is supported by peer-reviewed scientific evidence from reputable sources published in 2015 or later. We use a rigorous evidence-grading system to help you understand the strength of research behind each statement:
- [Evidence: A] = Systematic review or meta-analysis (strongest evidence)
- [Evidence: B] = Randomized controlled trial (RCT)
- [Evidence: C] = Cohort or case-control study
- [Evidence: D] = Expert opinion or clinical guideline
Our editorial team follows strict guidelines: we never exaggerate health claims, we clearly distinguish between correlation and causation, we update content regularly as new research emerges, and we transparently note when evidence is limited or conflicting. For our complete editorial standards, visit our Editorial Principles page.
This article is for informational purposes only and does not constitute medical advice. Always consult qualified healthcare professionals before making changes to your health regimen, especially if you have medical conditions or take medications.
References
- 1 . Effects of Collagen Supplements on Skin Aging: A Systematic Review and Meta-Analysis of Randomized Controlled Trials, The American Journal of Medicine, 2025, 138(9):1264-1277, PubMed [Evidence: A]
- 2 . Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis, Nutrients, 2023, 15(9), PubMed [Evidence: A]
- 3 . Skin Anti-Aging and Moisturizing Effects of Low-Molecular-Weight Collagen Peptide Supplementation in Healthy Adults: A Randomized, Double-Blind, Placebo-Controlled Clinical Trial, Journal of Microbiology and Biotechnology, 2025, 35:e2507008, PubMed [Evidence: B]
- 4 . Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis, International Journal of Dermatology, 2021, 60(12):1449-1461, PubMed [Evidence: A]
- 5 . Exploring the Impact of Hydrolyzed Collagen Oral Supplementation on Skin Rejuvenation: A Systematic Review and Meta-Analysis, Cureus, 2023, 15(12):e50231, PubMed [Evidence: A]
- 6 . Oral Collagen Supplementation: A Systematic Review of Dermatological Applications, Journal of Drugs in Dermatology, 2019, 18(1):9-16, PubMed [Evidence: D]
- 7 . Ingestion of bioactive collagen hydrolysates enhance facial skin moisture and elasticity and reduce facial ageing signs in a randomised double-blind placebo-controlled clinical study, Journal of the Science of Food and Agriculture, 2016, 96(12):4077-81, PubMed [Evidence: B]
- 8 . Oral intake of collagen peptide NS improves hydration, elasticity, desquamation, and wrinkling in human skin: a randomized, double-blinded, placebo-controlled study, Food & Function, 2023, 14(7):3196-3207, PubMed [Evidence: B]
- 9 . Oral Ingestion of AP Collagen Peptide Leads to Systemic Absorption of Gly-Pro-Hyp, Alleviating H2O2-Induced Dermal Fibroblast Aging, Journal of Medicinal Food, 2023, 26(5):299-306, PubMed [Evidence: C]
- 10 . Toxic metals and metalloids in collagen supplements of fish and jellyfish origin: Risk assessment for daily intake, Open Medicine, 2025, 20(1):20251141, PubMed [Evidence: C]
- 11 . Food-Derived Collagen Peptides, Prolyl-Hydroxyproline (Pro-Hyp), and Hydroxyprolyl-Glycine (Hyp-Gly) Enhance Growth of Primary Cultured Mouse Skin Fibroblast, International Journal of Molecular Sciences, 2019, 21(1), PubMed [Evidence: C]
- 12 . Orally Available Collagen Tripeptide: Enzymatic Stability, Intestinal Permeability, and Absorption of Gly-Pro-Hyp and Pro-Hyp, Journal of Agricultural and Food Chemistry, 2016, 64(38):7127-33, PubMed [Evidence: C]
- 13 . Effects of collagen-based supplements on skin's hydration and elasticity: A systematic review and meta-analysis, Indian Journal of Dermatology, Venereology and Leprology, 2025, 91(6):730-740, PubMed [Evidence: A]
- 14 . Oral Supplementation of Low-Molecular-Weight Collagen Peptides Reduces Skin Wrinkles and Improves Biophysical Properties of Skin: A Randomized, Double-Blinded, Placebo-Controlled Study, Journal of Medicinal Food, 2022, 25(12):1146-1154, PubMed [Evidence: B]
- 15 . Low-molecular-weight collagen peptides supplement promotes a healthy skin: A randomized, double-blinded, placebo-controlled study, Journal of Cosmetic Dermatology, 2024, 23(2):554-562, PubMed [Evidence: B]
- 16 . A Clinical Trial Shows Improvement in Skin Collagen, Hydration, Elasticity, Wrinkles, Scalp, and Hair Condition following 12-Week Oral Intake of a Supplement Containing Hydrolysed Collagen, Dermatology Research and Practice, 2024, 2024:8752787, PubMed [Evidence: B]
- 17 . The Effects of Dietary Supplementation with Collagen and Vitamin C and Their Combination with Hyaluronic Acid on Skin Density, Texture and Other Parameters: A Randomised, Double-Blind, Placebo-Controlled Trial, Nutrients, 2024, 16(12), PubMed [Evidence: B]
Medical Disclaimer
This content is for informational and educational purposes only. It is not intended to provide medical advice or to take the place of such advice or treatment from a personal physician. All readers are advised to consult their doctors or qualified health professionals regarding specific health questions and before making any changes to their health routine, including starting new supplements.
Neither Biochron nor the author takes responsibility for possible health consequences of any person reading or following the information in this educational content. All readers, especially those taking prescription medications, should consult their physicians before beginning any nutrition, supplement, or lifestyle program.
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