8 Best Collagen Supplements for Hair Growth & Thickness

Let’s be honest: with all the buzz around collagen, it’s normal to wonder—can a daily scoop really lead to thicker, healthier hair? While collagen isn’t a miracle cure, science shows it plays an important role in hair health. The amino acids from collagen help your body produce keratin, the protein that forms each hair strand, supporting strength, elasticity, and reducing breakage.

In this guide, we break down what collagen can and can’t do for your hair. You’ll get evidence-based insights and practical tips to choose the best collagen supplements for hair growth and thickness, so you can make informed decisions that actually work.

Key Takeaways

• Collagen provides the building blocks for stronger hair: It supplies the essential amino acids your body needs to produce keratin, the protein that makes up your hair. This internal support improves elasticity and helps reduce breakage from the inside out.
• Choose a high-quality supplement and take it daily: Look for hydrolyzed Type I collagen peptides with third-party certifications to ensure purity. Consistency is what delivers results, so make it a non-negotiable part of your daily routine.
• Combine supplements with a holistic approach: A collagen supplement works best when paired with a protein-rich diet and a gentle haircare routine. True hair wellness comes from supporting your body internally while protecting your strands externally.

How Collagen Supports Hair Growth?

When we talk about healthy hair, we often focus on the products we put on it. But true hair wellness starts from within, and that’s where collagen comes in. As one of the most abundant proteins in your body, collagen is a fundamental building block for your skin, bones, and, yes, your hair.

Think of it as the internal framework that supports everything. Understanding how it works can completely change your approach to haircare, helping you build stronger, more resilient strands from the inside out.

So, how exactly does this powerhouse protein contribute to the health and growth of your hair? Let’s get into the science behind it.

Understanding Your Hair’s Structure

Before we can appreciate what collagen does, it helps to know a little about your body’s architecture. At its core, collagen is a protein composed of essential building blocks called amino acids. It’s responsible for giving tissues like your skin, bones, and ligaments their strength and elasticity.

This is the protein that keeps your skin looking firm and your joints moving smoothly. Because your hair follicles are rooted in the dermis layer of your scalp's skin, it makes sense that a healthy foundation there is crucial for growing healthy hair. A well-nourished scalp is the starting point for the beautiful, strong hair we all want.

The Role of Collagen in Healthy Hair

Your hair itself is made of about 95% keratin, another type of protein. Your body needs specific amino acids to produce it, and collagen is a rich source of them. By supplying these building blocks, collagen helps your body create the keratin it needs to grow strong, healthy hair. This support can improve your hair’s elasticity, making it less susceptible to breakage.

Beyond that, collagen also functions as an antioxidant. It helps fight damage from free radicals—unstable molecules that can harm your hair follicles. By protecting the follicles, collagen creates a better environment for hair to grow. This dual-action support—providing building blocks and offering protection—is what makes collagen such a key player in your hair health routine.

Which Collagen Types Are Most Effective for Hair Growth?

Not all collagen is created equal; different types serve different purposes in the body. When it comes to hair, two types are particularly important: Type I and Type III. Type I is the most common type in your body and is known for supporting skin and bone health. For your hair, it helps build density and strength, which can lead to thicker-feeling strands and less breakage.

Type III is often found alongside Type I and is vital for the structure of your skin and organs. It supports a healthy scalp environment and aids in your body’s natural production of hair proteins. While supplementing with collagen is excellent for improving the quality of your existing hair, it’s good to know that it’s more of a support system than a magic bullet for new growth, especially when dealing with permanent types of hair loss.

The Science Behind Collagen and Hair Growth

Let’s be honest: collagen is everywhere right now, often presented as a miracle solution for longer, stronger hair. While collagen is a vital protein for your body, the science behind taking it as a supplement for hair health is still catching up to the hype. The research is promising but mixed.

 To help you make an informed choice, let’s break down what the current science says about how collagen might affect your hair’s growth, thickness, and overall health. We’ll look at the studies, the biological mechanisms, and how your body actually uses the collagen you consume.

Research on Hair Growth and Increased Length

When it comes to making hair grow longer, the research on collagen is still developing. There isn't a huge body of independent, conclusive evidence just yet. As the Cleveland Clinic notes, the research is far from definitive, and it’s wise to approach it with caution. Some smaller studies have shown positive results, like one that found a significant increase in hair count after 12 weeks.

However, that study was funded by a supplement company, which can sometimes influence results. The takeaway is that while some people may see growth, we need more independent research to know for sure.

Evidence Supporting Thicker, Stronger Hair

This is where the science behind collagen gets more solid. Your hair is primarily made of a protein called keratin. To produce keratin, your body needs various amino acids—and collagen is packed with them. Think of it this way: collagen provides the essential raw materials your body needs to build strong hair.

By supplying these building blocks, collagen can help improve your hair's elasticity and strength from within. Stronger hair is less prone to the snapping and breakage that can make it look thin, so there’s a strong basis for how collagen can support the overall health of your hair.

How Your Body Absorbs and Utilizes Collagen

One of the biggest questions is whether the collagen you consume actually makes it to your hair follicles. It’s a great question. When you take a supplement, your digestive system breaks the collagen down into amino acids. Your body then sends these amino acids wherever they’re needed most—which could be your joints, skin, or hair.

To improve the odds, most modern supplements use “collagen peptides,” or hydrolyzed collagen. This means the collagen is already broken down into smaller, more easily absorbed pieces. This process makes it easier for your body to put the collagen to use, increasing the chances that it will support your hair.

How to Choose a High-Quality Collagen Supplement

Walking down the supplement aisle can feel overwhelming, with countless bottles all promising incredible results. When it comes to collagen, not all products are created equal. The key is knowing exactly what to look for on the label to ensure you’re investing in a high-quality supplement that can actually support your hair health goals. From the specific type of collagen to the form it comes in, a little bit of knowledge can make all the difference.

Think of it like choosing your haircare—you wouldn’t just grab any shampoo, right? You look for specific ingredients that cater to your hair type and concerns. The same principle applies here. We’ll break down the essential components of a great collagen supplement, from the key ingredients that matter most for hair to the quality checks that signal a trustworthy product. This will help you cut through the noise and choose a supplement with confidence.

Key Ingredients That Really Make a Difference

When you’re scanning an ingredient list, the first thing to look for is the type of collagen. For hair health, Type I collagen is your best friend. It’s known to support thicker hair, encourage growth, and reduce breakage. Why? Because collagen provides the essential amino acids your body uses as building blocks for keratin, the main protein that makes up your hair strands.

 Supplying your body with these building blocks helps make hair more elastic and resilient. So, when you see Type I collagen or a multi-collagen blend that includes it, you know you’re on the right track for stronger, healthier hair.

Powder, Pills, or Liquid: Which Form Works Best?

You’ll find collagen supplements in just about every form imaginable: powders, pills, gummies, and even liquids. While personal preference plays a big role, powders tend to be the most popular and versatile option. Most collagen supplements on the market are sold as “collagen peptides,” which are simply smaller, broken-down pieces of collagen that are easier for your body to absorb and use.

These powders typically dissolve easily into drinks like coffee, smoothies, or even just a glass of water, making them a simple addition to your daily routine. Ultimately, the best form is the one you’ll take consistently.

Certifications and Quality Checks You Should Look For

Because the supplement industry isn’t tightly regulated, it’s crucial to look for signs of quality and purity. The best way to do this is to choose products that have been verified by a third-party organization. Look for seals from groups like NSF Certified for Sport or Informed Choice on the label.

 These certifications mean the supplement has been tested for purity and to confirm that it contains what the label claims. While it’s not a perfect system, opting for well-known brands can also add a layer of confidence, as they often invest more in research and quality control for their products.

8 Best Collagen Supplements for Hair Growth

Choosing the right supplement can feel overwhelming, so I’ve put together a list of some of the best collagen options out there to support your hair goals. When looking for a supplement, it’s important to consider the source of the collagen, the types it contains, and whether it has any third-party certifications for quality and purity. These certifications ensure that what’s on the label is actually what’s in the bottle.

This list includes a variety of forms, from powders to pills, and different sources, like bovine and marine, so you can find one that fits perfectly into your routine and aligns with your dietary preferences. Remember, consistency is key when it comes to any supplement. It takes time for your body to absorb the nutrients and for you to see visible results in your hair’s strength, thickness, and overall health.

Think of it as another essential step in your self-care ritual, just like your weekly hair mask or scalp treatment. Let’s walk through some of the top contenders that can help you build healthier, more resilient hair from the inside out.

Heirs to Beauty Collagen Complex

As a brand rooted in salon expertise, we believe that truly beautiful hair starts with a healthy foundation. Our Collagen Complex is designed to work in harmony with your topical haircare routine, providing the internal support your hair needs to thrive. Formulated with highly bioavailable collagen peptides, it helps replenish the amino acids that are essential for building strong keratin fibers.

This promotes hair elasticity, reducing breakage and encouraging resilience. We focused on creating a clean, effective formula that supports not just hair, but also skin and nails, embodying our philosophy of holistic, performance-driven beauty. It’s the perfect addition to a routine that values both luxury and results.

Vital Proteins Collagen Peptides

A popular choice for good reason, Vital Proteins offers a straightforward and effective formula. This unflavored powder is designed to nourish your hair from within, helping it grow thicker and fuller over time. Each serving delivers 20 grams of collagen peptides sourced from grass-fed, pasture-raised cows, which is a huge plus for anyone prioritizing high-quality ingredients.

 Because it’s so easily dissolvable in both hot and cold liquids, it’s incredibly simple to add to your morning coffee, smoothie, or even just a glass of water. It’s a simple, clean way to give your hair the building blocks it needs to look its best.

Sports Research Collagen Peptides

If you’re looking for a product that’s been rigorously tested, Sports Research is an excellent option. Their collagen powder contains Types I and III, which are fundamental for the health of your hair, skin, muscles, and connective tissues. What really sets this brand apart is its commitment to transparency and quality. It’s IGEN Certified for non-GMO testing and Informed-Choice Certified, meaning it’s been tested for banned substances.

This level of third-party validation provides peace of mind, assuring you that you’re getting a pure and effective product. It’s a solid, trustworthy choice for supporting your hair’s structure and strength.

Ancient Nutrition Multi Collagen

Why settle for one type of collagen when you can have several? Ancient Nutrition’s formula combines collagen from multiple sources, including bovine, chicken, fish, and eggshell membrane. This approach provides a broader spectrum of collagen types (I, II, III, V, and X), offering more comprehensive benefits that support not only your hair but also your joints, gut, and skin.

 By providing a diverse range of amino acids, this multi-collagen protein powder helps ensure your body has all the necessary components to build strong, healthy hair. It’s a great all-in-one option for anyone looking to support their overall wellness.

Garden of Life Grass-Fed Collagen

For those who prioritize organic and clean ingredients, Garden of Life is a go-to brand. Their collagen is sourced from grass-fed and pasture-raised cattle, ensuring a high-quality product that’s free from hormones and antibiotics. This powder also includes a targeted probiotic, Lactobacillus plantarum, to support healthy digestion, which can help your body absorb and utilize the collagen more effectively.

 It’s a thoughtful formula that connects inner health with outer beauty, making it a perfect fit for a holistic approach to haircare. Adding this to your routine can help fortify your hair from the inside, promoting strength and vitality.

NeoCell Super Collagen

NeoCell has been a trusted name in the collagen world for years, and their Super Collagen powder is a classic for a reason. It specifically focuses on Types I and III collagen, which are the most abundant types in our bodies and are crucial for the structure of our hair, skin, and nails. 

This formula is designed to be highly bioavailable, meaning your body can easily absorb and use it. By helping to replenish your body’s natural collagen supply, NeoCell Super Collagen supports hair strength and can help reduce breakage, leading to fuller, healthier-looking locks over time.

Further Food Marine Collagen

If you prefer a non-bovine source or follow a pescatarian diet, marine collagen is a fantastic alternative. Sourced from wild-caught cod, Further Food’s Marine Collagen is rich in Type I collagen. Some research suggests that marine collagen may play a role in keeping your hair in its anagen, or growing phase, for a longer period.

 This could potentially lead to less shedding and improved length retention over time. It’s a light, unflavored powder that dissolves easily, making it a simple and effective way to incorporate the hair-strengthening benefits of collagen into your daily routine.

Great Lakes Gelatin Collagen

Another excellent choice for those who value purity and quality is Great Lakes Gelatin. Their Collagen Hydrolysate contains Types I and III collagen and is sourced from grass-fed and pasture-raised cattle in Argentina and Brazil. Like some of the other top contenders, it has received important third-party certifications, including IGEN certification for being non-GMO and a glyphosate-free certification.

This commitment to clean sourcing ensures you’re getting a pure product without unwanted additives. It’s a reliable and effective supplement for supporting the structural integrity of your hair, helping it become stronger and more resilient.

Getting the Most Out of Your Collagen Supplement

Adding a collagen supplement to your routine is a fantastic step toward supporting your hair's health from the inside out. But to truly see those transformative results, it’s not just about what you take, but how you take it. Creating a consistent habit and understanding a few key details can make all the difference in helping your body put that collagen to work.

Think of it as creating the perfect internal environment for stronger, healthier hair to thrive. By optimizing your dosage, timing, and even the other nutrients you consume, you ensure you’re getting the full value from your investment in your hair's future.

Recommended Dosage for Hair Growth

Finding the right amount of collagen can feel tricky, but the science gives us a clear starting point. Most studies showing benefits for hair and skin use between 5 to 15 grams of collagen peptides daily. For general wellness, a common dose is often between 2.5 to 10 grams per day.

The best approach is to start by following the recommended serving size on your product’s label, as formulations can vary. The most important factor for success is consistency. Taking your collagen every single day allows it to build up in your system, providing your body with a steady supply of the amino acids it needs to support hair follicle health.

Best Times to Take Collagen for Maximum Absorption

Here’s some good news: there’s no magic window for taking your collagen. You can take it once a day, with or without food, whenever it fits best into your schedule. The key is finding a time that makes it easy to remember. Many people love mixing collagen powder into their morning coffee, a post-workout smoothie, or even a glass of water in the afternoon.

By tying it to an existing habit, you’re more likely to stick with it long-term. Research suggests that consistent daily use for at least a few months is what leads to noticeable results, so find a routine that works for you and stay with it.

Nutrients That Enhance Collagen’s Effectiveness

To give your collagen supplement an extra edge, pair it with nutrients that help your body use it more effectively. Vitamin C is collagen’s best friend—it’s essential for your body’s natural collagen synthesis process. Zinc also plays a crucial role in protein production and tissue repair, which are vital for healthy hair growth.

 Many high-quality collagen formulas, like our own Heirs to Beauty Collagen Complex, already include these supportive ingredients. You can also get them through your diet by eating citrus fruits, bell peppers, and leafy greens for Vitamin C, and nuts, seeds, and legumes for Zinc.

Proper Storage Tips to Maintain Potency

Proper storage is key to preserving the quality and effectiveness of your collagen supplement. Keep it in a cool, dry place away from direct sunlight and moisture, as heat and humidity can degrade the ingredients. Your pantry or a kitchen cabinet are perfect spots. It’s also important to choose supplements from reputable companies that prioritize quality and transparency.

 Before you start, carefully check the label for all ingredients, especially if you have any allergies or dietary restrictions. A trustworthy brand will always be clear about what’s inside their product, ensuring you’re getting a pure and potent supplement.

Supporting Your Body’s Collagen Naturally

While a high-quality supplement can be a game-changer, it works best when it’s part of a bigger picture. Supporting your body’s own collagen production is the foundation for strong, resilient, and truly healthy hair. Think of it as creating the perfect internal environment for your hair to thrive.

 By focusing on a few key areas—what you eat, how you live, and how you care for your hair—you can make a significant impact on your hair’s health from the inside out. These daily habits work hand-in-hand with your supplement routine to help you achieve the best possible results.

Foods That Boost Collagen Production

Your body is amazing at making its own collagen, but it needs the right raw materials. The most important building blocks come from protein-rich foods. Things like bone broth, chicken or fish with the skin on, and egg whites are packed with the amino acids your body uses for collagen synthesis.

But protein isn't the only piece of the puzzle. Vitamin C is essential for this process to work. So, be sure to pair those proteins with foods like citrus fruits, bell peppers, and dark leafy greens. This powerful combination gives your body everything it needs to support collagen production naturally.

Lifestyle Habits for Stronger, Healthier Hair

Healthy, resilient hair starts long before you step into the shower. What you eat, how you sleep, and how you care for your body all play a major role in how your hair looks and feels. Since hair is made primarily of protein, a balanced diet rich in protein and healthy fats is essential for strong, breakage-resistant strands.

Hydration is just as important. Drinking enough water helps keep your scalp balanced and your hair naturally moisturized from within. And because stress directly affects the hair growth cycle, managing cortisol levels through sleep, movement, or mindfulness can dramatically improve overall hair vitality.

But daily habits extend beyond lifestyle — they also include the products you choose. For an extra layer of strength, softness, and protection, pair your healthy routine with the Super Luxe Hero Cream. This lightweight, nutrient-rich formula delivers essential moisture, repairs damage, and shields hair from everyday stressors. It’s the perfect finishing step for anyone looking to support hair health from the inside and the outside.

With the right habits and the right products, your hair stays stronger, smoother, and more radiant — every single day.

Why Your Hair Care Routine Matters Too

You can have the strongest internal foundation, but if your external routine is causing damage, you won’t see the results you want. Collagen helps give your hair its strength and elasticity by providing the amino acids needed to build keratin, the main protein in hair. This makes your strands more resilient and less prone to snapping.

 To protect that natural strength, be mindful of your styling habits. Try to limit heat styling whenever possible, and always use a quality heat protectant when you do. Gentle handling—like using a silk pillowcase and avoiding tight hairstyles—also helps prevent unnecessary breakage and preserve the hair you’re working so hard to grow.

Important Considerations Before Starting Collagen

Adding a new supplement to your routine is a personal decision, and it’s smart to go in with your eyes open. While collagen is generally well-tolerated, it’s not a one-size-fits-all solution for hair health.

Thinking through a few key points can help you make an informed choice that feels right for you and your body. From potential side effects to the importance of quality, here’s what to consider before you get started.

Potential Side Effects to Be Aware Of

Most people who take collagen don’t experience any issues, but it’s good to know what to look out for. Some individuals report minor side effects when they first start. These can include an unpleasant aftertaste, mild stomach upset, or other digestive issues like diarrhea. Less common reactions might involve dizziness, headaches, or a skin rash.

If you notice any of these, it could be a sign that the particular supplement isn't the best fit for your system. Listening to your body is always the best first step, and you can always check in with your doctor if you have any concerns about how a new supplement is affecting you.

Is Collagen Right for Everyone?

While the buzz around collagen for hair is exciting, it’s important to know that the science is still developing. Researchers are actively studying its effects, but the research on collagen supplementation is far from conclusive. This doesn't mean it won't work for you, but it does mean results can vary from person to person.

Think of it as a personal experiment. If you’re curious to try it, go for it—just be aware that it’s not a guaranteed fix for hair concerns. Managing your expectations and pairing your supplement with a holistic approach to hair health, including a great haircare routine and a balanced diet, will always give you the best results.

Allergies and Sensitivities: What to Know

When you’re choosing a supplement, the collagen itself isn’t the only thing you’re consuming. Many products contain added ingredients like flavorings, colorants, or preservatives to make them more palatable or shelf-stable. If you have known allergies or sensitivities, reading the label carefully is a must. An unexpected reaction might not be from the collagen but from one of these extra ingredients.

This is especially true if you’re sensitive to common allergens like soy, gluten, or dairy, which can sometimes be found in supplement formulas. Opting for a clean, minimal-ingredient product can help you avoid any unwanted surprises.

Why Choosing a Quality Supplement Is Crucial?

Here’s something you might not know: the U.S. Food and Drug Administration (FDA) regulates collagen as a food, not a drug. This means supplements don't undergo the same rigorous testing for safety and efficacy that medications do. Because of this, the quality and purity can vary widely between brands, making it crucial for you to do a little homework before you buy.

To ensure you’re getting a high-quality product, look for supplements that have been verified by a third-party organization. Certifications from groups like NSF, IGEN, or Informed Choice mean the product has been independently tested to confirm it’s pure and contains exactly what the label claims. This simple check gives you peace of mind that you’re investing in a collagen supplement that is both safe and effective.

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Frequently Asked Questions

How long will it take to see a difference in my hair after I start taking collagen? Patience and consistency are your best friends here. Because hair grows in cycles, you won’t see a change overnight. Most people start to notice improvements in their hair's strength and texture after about three to six months of daily use. This gives your body enough time to absorb the amino acids and put them to work building stronger, more resilient hair from the follicle up.

Can collagen actually reverse hair loss? It’s best to think of collagen as a support system rather than a cure for hair loss. It provides the essential building blocks your body needs to produce keratin, which can make your existing hair stronger and less prone to breakage. This can lead to hair that looks and feels fuller. However, it is not a proven treatment for reversing permanent types of hair loss, so it's important to have realistic expectations.

Is it better to get collagen from food or a supplement? A food-first approach is always a great foundation for overall health. Eating protein-rich foods like bone broth and chicken gives your body the raw materials it needs. However, a high-quality supplement offers a concentrated and easily absorbed dose of the specific amino acids that support hair health. Think of a supplement as a reliable way to ensure you’re consistently getting what you need, working alongside a healthy diet.

What's the real difference between marine and bovine collagen for hair? Both marine (from fish) and bovine (from cows) collagen are excellent sources of the Type I collagen that is so beneficial for hair strength and structure. The primary difference is simply the source, which makes marine collagen a great option for pescatarians or those who avoid beef. Some people find that marine collagen is absorbed a bit more easily due to its smaller particle size, but ultimately, choosing a high-quality, third-party tested product is more important than the source itself.

If I stop taking collagen, will my hair go back to how it was before? Yes, most likely. The benefits you see from taking a collagen supplement are dependent on your consistent daily intake. When you stop taking it, your body no longer receives that concentrated supply of amino acids. Over time, your hair's strength and resilience will return to being supported solely by your diet and your body's natural collagen production. It’s best to view it as an ongoing part of your wellness routine.