Hair growth isn’t just about what you see in the mirror. It’s a fascinating, cyclical process happening beneath the surface. Understanding these hair growth stages helps explain why supporting your hair from the inside out can make all the difference.

• Anagen (Growth Phase):The active phase, lasting several years, where the hair follicle produces new hair fibers and your strands gain length and fullness.1
• Catagen (Transition Phase):A brief transition period, usually just a few weeks, when the hair stops actively growing and the follicle begins to shrink.1
• Telogen (Resting Phase):The dormant phase, lasting weeks to months (especially on the scalp), when the follicle rests before the hair naturally sheds and new growth begins.1

By keeping these phases in mind, you can better appreciate the importance of nourishing your body, because healthy hair truly starts from within.

How Collagen May Benefit Hair

If you’ve ever gone down a skincare or wellness rabbit hole, chances are you’ve heard collagen mentioned (right up there with “drink more water!” and “don’t forget your sunscreen!”). But what is collagen, and why is it suddenly the main character in your haircare journey?

Collagen is the most abundant protein in your body.2 Think of it as the scaffolding that keeps everything from your skin to your bones and your hair looking and feeling strong. However, as you age, natural collagen production slows down. Collagen levels may also be affected by external factors like UV radiation, stress, air pollution, and poor nutrition.2

Collagen Can Be a Building Block of Hair

This decline doesn’t just affect your skin’s bounce; your hair can become thinner, duller, and more prone to splitting. So, why does your hair care if you’ve got enough collagen? It all comes down to amino acids.

Hair is primarily composed of a protein called keratin, and your body needs a variety of amino acids to produce it. When you consume collagen (or other proteins), your body breaks them down into amino acids, which it then uses to build new proteins and support various structures, including hair.

Collagen is especially rich in three nonessential amino acids: proline, glycine, and hydroxyproline. Proline, in particular, is a central component of keratin, making collagen a potential source of the raw materials your body needs to help maintain healthy-looking hair. While studies directly connecting collagen intake to hair growth in humans are still limited, providing your body with these key building blocks is one supportive step you can take on your hair health journey.*

Choosing the Right Collagen Supplement for Hair Health

Not all collagen is created equal, and your mane deserves more than just a flashy label or the latest influencer hype. Here are some key factors you should consider before checking out:

Check the Origin

High-quality collagen is typically sourced from grass-fed cows or wild-caught fish. At Amandean, our bovine collagen is made from 100% pasture-raised South American cows. In contrast, our marine collagen is sustainably sourced from wild-caught whitefish (cod, pollock, haddock, hake) in the pristine waters of the North Atlantic Ocean. Think of it as a "farm-to-follicle" philosophy: the cleaner the source, the better your chances of supporting overall hair health from the inside out.

Focus on Bioavailability

Bioavailability is everything when it comes to collagen. That’s why we use hydrolyzed collagen peptides, which get broken down into smaller chains in the digestive tract for easier absorption and utilization throughout the body. Once absorbed, these peptides may help support your body’s collagen production, benefiting your hair, skin, joints, and nails.2* Peer-reviewed clinical research has observed that consistent supplementation with hydrolyzed collagen has shown potential for promoting skin hydration and elasticity and supporting joint comfort in aging populations.2

Don’t Limit Yourself to Bovine Collagen

If you want to nourish your hair from the inside out, marine collagen might be what you’ve been missing. In a recent study, fish-derived collagen peptides were shown to support hair health in both cell and animal models.4 Specifically, these peptides helped promote the growth of dermal papilla cells (key players in the hair growth cycle), encouraged the anagen (growth) phase, and supported the expression of factors associated with stronger, healthier-looking hair.4 While more human studies are needed, these findings highlight the exciting potential of marine collagen for anyone focused on hair vitality.

Our marine collagen offers an extra edge: double-hydrolyzed peptides translate into superior bioavailability. It’s ideal for pescatarians or anyone seeking a clean, sustainable alternative to bovine collagen. It blends seamlessly into your favorite drinks (even water!) and is free of sugars, fillers, and preservatives. It’s as easy to incorporate into your routine as it is for your body to use.

Prioritize Purity

Purity should be non-negotiable. Amandean collagen supplements are as clean and straightforward as possible, with an ingredient list you can easily understand. You won’t find any artificial sweeteners, weird aftertastes, or unwelcome surprises in our formulations.

Our collagen is produced in cGMP-compliant, registered U.S. facilities and undergoes rigorous third-party testing to verify purity, quality, and safety. When you choose Amandean, you’re choosing transparency and uncompromising standards — so you can nourish your hair (and the rest of you) with total confidence.

Tips for Maximizing Hair Benefits from Collagen

Let’s talk strategy, because great hair usually doesn’t just happen by chance. It results from smart daily choices, premium ingredients, and a sprinkle of patience. To help your hair thrive with collagen, keep these habits in your wellness toolkit:

• Make It a Daily Ritual: Consistency is your secret weapon. Whether you blend collagen into your morning coffee, smoothie, or post-dinner dessert, making it an everyday habit is key. Hair support is a long game, so stick with it!
• Pair with Protein: Your hair is primarily made of keratin, a protein built from amino acids.3 Collagen provides some essential building blocks, but pairing it with a protein-rich diet (think eggs, fish, quinoa, or Greek yogurt) may help keep strands stronger and shinier.
• Hydrate Like You Mean It: Staying well-hydrated supports overall health and helps your body use collagen efficiently. Think of water as the ultimate sidekick to your collagen routine.
• Support with Vitamin C: Vitamin C is crucial to your body’s natural collagen synthesis.3 Enjoy more citrus, berries, or bell peppers, and consider pairing your collagen with a vitamin C supplement (like our Liposomal Vitamin C) for added support.3 While not a magic fix, this combo can be a valuable piece of your hair wellness puzzle.
• Don’t Skip the Scalp TLC: Show your scalp some love with gentle massages or nourishing oils. Healthy circulation may help deliver nutrients where they’re needed most.
• Be Patient: Hair grows at a snail’s pace — about half an inch per month on average. Give your body time to do its thing, and celebrate small wins.

Stick with these tips and your hair will start trending in the right direction — stronger, shinier, and ready for its next close-up.

Read also:

• Creatine & Collagen: Why You Need This Powerful Duo
• Powerful Trio For Graceful Aging: Vitamin D3+K2 & Omega-3
• Collagen And Liposomal Vitamin C - A Match Made In Heaven

Sources:

1. Hoover, E., Alhajj, M., & Flores, J. L. (2025). Physiology, hair. In StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing. Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK499948/
2. Campos, L. D., Santos Junior, V. de A., Pimentel, J. D., Carregã, G. L. F., & Cazarin, C. B. B. (2023). Collagen supplementation in skin and orthopedic diseases: A review of the literature. Heliyon, 9(4), e14961. https://doi.org/10.1016/j.heliyon.2023.e14961
3. Streit, L. (2019, January 23). 5 evidence-based ways collagen may improve your hair. Healthline. Retrieved from https://www.healthline.com/nutrition/collagen-for-hair
4. Hwang, S. B., Park, H. J., & Lee, B. H. (2022). Hair-growth-promoting effects of the fish collagen peptide in human dermal papilla cells and C57BL/6 mice modulating Wnt/β-catenin and BMP signaling pathways. International Journal of Molecular Sciences, 23(19), 11904. https://doi.org/10.3390/ijms231911904