In the pursuit of glowing skin, stronger hair, and resilient nails, collagen has emerged as one of the most researched and praised supplements in beauty and wellness. But what is collagen really doing beneath the surface, and what does science have to say about its benefits?

What Is Collagen?

Collagen is the most abundant protein in the human body, making up nearly 30% of the body’s total protein content. It's the structural scaffold found in the dermis (the middle layer of the skin), tendons, ligaments, bones, and connective tissue. In the skin, collagen provides elasticity, hydration, and firmness.

There are at least 28 known types of collagen, but Type I, II, and III account for the majority found in the skin and connective tissues. As we age, collagen production naturally declines — starting as early as age 25 — leading to fine lines, wrinkles, sagging skin, brittle nails, and thinning hair.

Collagen Supplementation: What the Science Says

Scientific studies have shown that ingestible hydrolyzed collagen peptides (also known as collagen hydrolysate) can effectively improve skin elasticity, hydration, and dermal collagen density.

🔬 A randomized, placebo-controlled study published in Skin Pharmacology and Physiology (2014) found that women who took 2.5–5g of collagen peptides daily for eight weeks showed significantly improved skin elasticity compared to the placebo group. The effects were particularly pronounced in women over 50, suggesting collagen may be especially beneficial in combating age-related skin deterioration [1].

🔬 Another study published in Journal of Cosmetic Dermatology (2015) demonstrated that supplementation with collagen peptides increased skin hydration and reduced wrinkle depth after just 4 weeks of use [2].

These results are attributed to the ability of hydrolyzed collagen to be absorbed in the intestines and transported to the dermis, where it stimulates fibroblasts to produce more collagen, elastin, and hyaluronic acid.

Benefits for Hair and Nails

While skin gets most of the spotlight, collagen also plays a vital role in supporting healthy hair and nails. Collagen provides essential amino acids like proline and glycine that are used to build keratin — the structural protein that forms hair and nails.

💡 A study published in the Journal of Investigative Dermatology (2005) found that collagen degradation around hair follicle stem cells can contribute to hair loss during aging, highlighting the importance of maintaining a healthy extracellular matrix [3].

💅 For nails, a 2017 clinical trial showed that daily intake of 2.5g of bioactive collagen peptides increased nail growth rate by 12% and reduced the frequency of broken nails by 42% over 24 weeks [4].

Enhancing Bioavailability: Why Hydrolyzed Collagen Matters

Not all collagen supplements are created equal. Hydrolyzed collagen (or collagen peptides) is broken down into smaller chains of amino acids that are more readily absorbed by the body. This makes it the preferred form in clinical studies and high-quality beauty supplements.

When paired with other nutrients like Vitamin C (which supports collagen synthesis), zinc, hyaluronic acid, and biotin, collagen supplements become even more effective in supporting healthy skin, hair, and nails.

Key Takeaways

• Skin: Collagen peptides improve elasticity, hydration, and smoothness.

• Hair: They provide building blocks for keratin and maintain scalp structure.

• Nails: Improve strength, growth rate, and reduce breakage.

• Science-backed: Clinical trials consistently demonstrate significant improvements in visible beauty markers after 4–12 weeks of supplementation.

Ready to Glow from Within?

At Viyera, our Beauty Collagen formula is crafted with premium hydrolyzed collagen peptides and essential co-nutrients to help you unlock your natural radiance — from the inside out.

References:

1. Proksch, E., et al. (2014). Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: a double-blind, placebo-controlled study. Skin Pharmacology and Physiology, 27(1), 47–55. https://doi.org/10.1159/000351376

2. Schunck, M., et al. (2015). Nutritional supplement increases skin elasticity and hydration. Journal of Cosmetic Dermatology, 14(4), 291–301. https://doi.org/10.1111/jocd.12174

3. Rahmani, W., et al. (2014). Hair follicle dermal stem cells regenerate the dermal sheath, repopulate the dermal papilla, and modulate hair type. Developmental Cell, 31(5), 543–558.

4. Hexsel, D., et al. (2017). Oral supplementation with specific bioactive collagen peptides improves nail growth and reduces symptoms of brittle nails. Journal of Cosmetic Dermatology, 16(4), 520–526. https://doi.org/10.1111/jocd.12393

The content provided in this blog is for informational and educational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional before starting any new supplement, dietary change, or fitness program. Individual results may vary. Statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease.