Collagen Supplements: Benefits for Skin, Hair & Nails

Collagen is the single most abundant protein in the human body, comprising approximately one-third of total proteins. This fibrous structural protein forms the foundation of your skin, hair, nails, bones, cartilage, tendons, and ligaments — essentially the scaffolding that holds your body together. The word itself comes from the Greek kolla, meaning "glue," reflecting the binding, structural role this protein plays throughout your connective tissues.

As we age, our body's natural Collagen production declines. Skin aging is characterized by decreasing levels of Collagen, elastin fiber, and hyaluronic acid, resulting in a loss of skin elasticity and hydration. This is where Collagen supplements come in. Modern Collagen supplements use hydrolyzed Collagen — also called Collagen peptides — which are large Collagen molecules broken down through enzymatic hydrolysis into smaller amino acid chains (typically 3–6 kDa) that the body can more readily absorb.

Studies have shown that when Collagen hydrolysate is taken orally, it is absorbed as di- and tripeptides (two or three amino acids) typically rich in hydroxyproline. These smaller peptides are believed to enter circulation and reach target tissues like skin or cartilage, where they help support Collagen-producing cells called fibroblasts. In essence, Collagen supplements deliver the specific amino acid building blocks — glycine, proline, and hydroxyproline — that your body uses to maintain and rebuild its own Collagen structures.

The dietary tradition behind Collagen supplements is actually ancient. Bone broth — a Collagen-rich preparation made by slow-simmering bones and connective tissues — has been a cornerstone of traditional cuisines across every continent for centuries. From Chinese slow-cooked chicken feet broths to French pot-au-feu, Vietnamese pho, and Mexican caldo de res, cultures worldwide independently discovered the nourishing value of Collagen-rich foods. In Traditional Chinese Medicine, Collagen-rich foods were used to support skin elasticity, healthy aging, and joint strength. Modern Collagen peptide supplements simply offer a convenient format — a powder that dissolves in a beverage rather than a broth that requires hours of simmering.

Collagen supplements have been evaluated in over 60 clinical studies assessing their effects on skin aging, musculoskeletal health, and more. Here's what the current research tells us about the key areas where Collagen supplements may make a difference.

Skin Elasticity, Hydration, and Anti-Aging

This is where the evidence for Collagen supplements is strongest. A systematic review and meta-analysis utilizing data from 10 randomized controlled trials (RCTs) with 646 participants found that Collagen supplements were statistically effective in increasing skin hydration and elasticity. Multiple meta-analyses of RCTs — including studies with up to 1,721 participants — demonstrate significant improvements in skin elasticity and hydration after 8–12 weeks. Research suggests that fibroblasts recognize bioactive peptides such as Pro-Hyp and Gly-Pro-Hyp and upregulate Collagen and hyaluronic acid synthesis in response.

Literature data have shown that hydrolyzed Collagen supplementation promotes decreased wrinkle formation, increased skin elasticity, increased hydration, and increased Collagen content, density, and synthesis. A systematic review published in the Journal of Drugs in Dermatology (2019) concluded that preliminary results are promising for the short- and long-term use of oral Collagen supplements for skin aging, noting that Collagen supplementation is generally safe with no reported adverse events.

Hair Growth and Hair Loss

Research suggests that oral Collagen peptides provide amino acid substrates — notably proline, glycine, and hydroxyproline — that support keratin synthesis and the integrity of the dermal matrix around hair follicles. A 2023 randomized controlled trial using marine hydrolyzed Collagen combined with amino acids, iron, and selenium found improved clinical outcomes in patients with androgenetic alopecia and telogen effluvium. A 2022 study found that fish-derived Collagen peptides promoted human dermal papilla cell proliferation and stimulated hair regrowth in mice. A systematic review found Collagen peptides may improve the clinical appearance, strength, and brittleness of hair.

Nail Strength

A 2017 open-label trial published in the Journal of Cosmetic Dermatology found that 2.5 g/day of specific bioactive Collagen peptides for 24 weeks increased nail growth rate by 12% and reduced the frequency of broken nails by 42% in 25 women with brittle nail syndrome. Collagen peptides supply glycine and proline used in keratin synthesis and nail matrix support.

Joint Health

A systematic review and meta-analysis (2023) concluded that Collagen peptides provide compelling evidence of significant pain reduction in knee osteoarthritis patients compared to placebo. For exercise-related joint pain, a systematic review of 15 RCTs found that Collagen supplementation increased pain-free time to exertion and Collagen synthesis. The beneficial effects appear to take effect after three months or longer.

Bone Health

Preliminary research suggests that Collagen supplementation may increase bone strength, density, and mass. These findings principally derive from studies in postmenopausal women with osteopenia and are promising but require larger, independent replications.

It's worth noting that while evidence for skin, hair, nails, and joint benefits is encouraging, the current research for hair, nails, gut health, and cognitive function is still classified as insufficient to draw definitive conclusions. If you have specific health concerns, our naturopath is available for a free consultation to help you understand which supplements may be most appropriate for your needs.

Collagen is categorized into 28 subtypes, but types I, II, and III make up 80–90% of the Collagen in the human body. Each type plays a distinct structural role:

• Type I: The most abundant — found in skin (approximately 80%), tendons, organs, bone, and vascular connective tissue
• Type II: Predominates in cartilage, constituting 90–95% of the cartilage extracellular matrix
• Type III: Found in reticular connective tissue and blood vessels, often associated with Type I Collagen (approximately 15% of skin Collagen)
• Type IV: Found in the basement membranes of epithelial tissues
• Type V: Found in hair, placenta, and external cellular membranes

The primary commercial sources of Collagen used in supplements include bovine (cattle) hide and bone, porcine hide and bone, chicken sternal cartilage, and fish skin and scales. Bovine and porcine tissues remain the major sources due to their wide availability and biocompatibility with human tissues. Marine Collagen from fish and other invertebrates has also become a focus of development.

Native Collagen is a large, complex polymer with low solubility and bioavailability. To be useful as a supplement, it must be broken down into smaller peptides through hydrolysis — which is why virtually all Collagen supplements are more correctly called Collagen peptides or hydrolyzed Collagen. The principal delivery format is powder, which is soluble in both hot and cold liquids, though capsules, tablets, and liquid preparations are also available.

Collagen supplements may be a good fit for a wide range of people. Based on the available research and the product's formulation, these Collagen peptides may be particularly well-suited for:

• Those seeking skin health support: If you're noticing changes in skin elasticity or hydration as you age, research suggests Collagen peptides may help promote a more youthful appearance by supporting the skin's structural matrix.
• People concerned about hair thinning or brittleness: Collagen provides the amino acid substrates that support keratin synthesis and the dermal matrix around hair follicles, which research suggests may help improve hair appearance and strength.
• Anyone with brittle or slow-growing nails: Studies suggest Collagen peptides may support nail growth and reduce breakage by supplying glycine and proline for keratin synthesis.
• Active individuals and those with joint concerns: Research indicates that Collagen peptide supplementation, particularly in conjunction with exercise, may support joint comfort and Collagen synthesis in connective tissues.
• Those following specific dietary lifestyles: This formula is NON-GMO, KETO-friendly, DAIRY-free, GLUTEN-free, and PALEO-friendly, making it accessible for many dietary preferences.

Because Collagen is an incomplete protein (it lacks the essential amino acid tryptophan), it should not be used as a sole protein source. Individuals with allergies to the animal source from which their Collagen is derived should exercise caution. If you're unsure whether Collagen supplements are right for you — especially if you have specific health conditions or are taking medications — our naturopath is happy to help during a free consultation.

This Collagen powder is odorless, tasteless, and mixes easily into any hot or cold beverage, smoothie, or food. It is easily integrated into any daily wellness program.

Simply stir 1 scoop into any beverage — coffee, tea, water, fruit juice, or whatever you prefer — or add it to your favorite recipes. Use daily for best results.

Consistency matters with Collagen supplements. Research on skin benefits has typically shown results after 8–12 weeks of daily use, while joint benefits in clinical studies tend to appear after three months or longer. The product comes in an 18 oz container to support your ongoing daily routine.

It's worth noting that vitamin C is a required cofactor for Collagen synthesis in the body — specifically for the hydroxylation of lysine and proline residues. Emerging data suggest that Collagen peptides may work particularly well when co-supplemented with vitamin C. Ensuring adequate vitamin C intake alongside your Collagen supplements may help support your body's own Collagen-building processes.