17 Keratin Supplements for Hair Growth You Need to Know

Discover the best keratin supplement for hair growth to boost your tresses with vibrant strength and shine. Find your perfect hair-healthy match today.
BrandMy RatingPrice
Nature's Nutrition
Most Wallet-Friendly
9.2/10
Lemme
Best for Hair Thinning
8.0/10
Double Wood Supplements
Best for Aging Hair
9.0/10
Hair Thickness Maximizer
Best for Thickening
8.6/10
Nutraharmony
8.8/10

Best Keratin Supplement for Hair Growth

Unlock the secret to luscious, vibrant hair with the best keratin supplements designed to transform dull strands into a radiant crown. In a sea of options, finding the perfect match can feel like searching for a needle in a haystack—luckily, we've distilled the essentials into a quick, straightforward guide. Get ready to discover the ultimate keratin boost that your hair has been craving.

Most Wallet-Friendly: Nature's Nutrition Hair Vitamins

Hair Vitamins Women, Ultra Strength 5000mcg Biotin, Collagen, PABA & More - Womens Hair Growth, Skin, Nails & Keratin Support Supplement, Infused w/ Argan Oil & Hyaluronic Acid, Non-GMO - 120 Softgels
Highlights
Supports thicker, longer hair
Includes skin & nail nutrients
Easy-to-swallow vitamins

As our most wallet-friendly pick, it packs a punch with a comprehensive 16-in-1 formula that combines powerful ingredients like 5000mcg biotin, collagen, hyaluronic acid, and argan oil.

These essentials support not just thicker, fuller hair but also boost skin hydration and nail strength.

While some users note mixed results on hair growth, the affordability and holistic approach make it a smart addition to your beauty routine.

Easy to swallow and designed for women’s wellness, this supplement offers great value without sacrificing quality.

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Price history for Nature's Nutrition Hair Vitamins on Amazon

Best for Hair Thinning: Lemme

Lemme Grow Hair Growth Supplement for Women, Clinically Proven Keratin Complex for Visibly Thicker Hair and Scalp Coverage, Reduced Shedding, Nourish Thinning Hair - 1 Month Supply
Highlights
Thicker, fuller hair
Clinically supported results
Supports scalp health

Clinically proven Cynatine HNS is at the heart of this supplement, specifically targeting hair shedding and promoting thicker, more resilient hair in just 12 weeks.

The formulation also supports scalp health and boosts shine, giving your hair that enviable glow.

While some users might experience dryness initially or find the price a bit steep, the visible results in just a month make it a strong contender for those battling hair thinning.

Plus, it’s free from artificial junk, ensuring you're nourishing your hair with trusted ingredients made right in the USA.

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Price history for Lemme on Amazon

Best for Aging Hair: Double Wood Keratin Vitamins

Keratin Hair Growth Vitamin (500mg per Serving, 120 Pills) Keratin Hair Treatment for Men and Women (Vital Protein for Hair, Skin, and Nails) Vitaminas para El Cabello, Vegan Safe by Double Wood
Highlights
Supports hair strength
Backed by research
Improves nail health

Double Wood's keratin supplement (our pick for "Best for Aging Hair") is a solid choice for those looking to maintain hair vitality.

The research-backed 500mg dose delivers real results—after just 30 days, hair becomes noticeably stronger, and by 90 days, improvements are evident.

While some may find the large pills challenging to swallow, the benefits for hair and nail health make it worth the effort.

This supplement is a reliable addition for anyone aiming to combat age-related hair concerns and restore some youthful vibrancy.

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Price history for Double Wood Keratin Vitamins on Amazon

Best for Thickening: Hair Thickness Maximizer

Biotin (5000mcg), Keratin, Collagen, Horsetail, Saw Palmetto – 5-in-1 Hair Growth Supplement & Vitamins for Women & Men, DHT Blocker Capsules for Thinning - Hair Growth Vitamins
Highlights
Supports hair growth
Suitable for all hair types
Made in USA

Hair Thickness Maximizer’s 5-in-1 formula packs a punch of essential nutrients like Biotin, Keratin, Collagen, Horsetail, and Saw Palmetto—everything your hair needs to look fuller and healthier.

It’s crafted specifically with hair growth in mind, making it a great choice for those aiming for thicker locks.

Plus, it’s suitable for all hair types, from straight to curly, and free from harsh chemicals.

Just keep in mind, results depend on individual factors and consistent use, but when you stick with it, you’re likely to see some truly promising improvements.

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Price history for Hair Thickness Maximizer on Amazon

Nutraharmony

Biotin | Collagen | Keratin - Clinically Tested Supplement - Hair Growth Support, Skin & Nails - 25000 mcg Vitamins B2, B3, B6 & B7 + B1 & Hyaluronic Acid - Made in USA - Women & Men | 60 Capsules
Highlights
Supports healthy hair growth
Easy to swallow capsules
Includes biotin, collagen, keratin

The Nutraharmony Biotin Supplement packs a punch with its powerful blend of biotin, collagen, and keratin, all in an easy-to-swallow capsule.

It's designed to support healthy hair growth, radiant skin, and strong nails, making it a go-to for beauty from the inside out.

Plus, it's formulated without GMOs, gluten, or corn syrup, so you can feel good about what you're taking.

While the limited review sample means results may vary, those looking for a convenient, nutrient-rich boost to their beauty routine will find this supplement a promising choice.

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Price history for Nutraharmony on Amazon

Amazonliss

Amazonliss Keratin Hair Treatment Set 2.03 Fl Oz - Natural Ingredients ACAI, Smooths, Softens, Moisturizes, Adds Shine, Reduces Frizz. Packaging may vary
Highlights
Heavy, soft, shiny hair
Fast, easy application
Long-lasting results

It delivers immediate results with smooth, shiny, and soft hair that lasts long after the treatment.

The Brazilian Hydrolyzed Keratin effectively restores the hair at a molecular level, reducing frizz and adding weightless hydration.

Most notably, its formula is safe for colored hair and compatible with other treatments, making it a versatile choice.

While the strong fumes and potential risk of scalp irritation are worth noting, the ease of application and fast, long-lasting effects make this keratin treatment a top contender for those seeking sleek, frizz-free locks.

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Price history for Amazonliss on Amazon

NeoCell Keratin Supplement for Hair Growth

NeoCell Keratin Hair Volumizer With Collagen, Amla Extract and Vitamin C, Hair and Skin Supplement, Capsule, 60 Count, 1 Bottle
Highlights
Supports hair strength
Enhances hair luster
Easy daily intake

NeoCell Keratin Hair Volumizer combines keratin and collagen in a handy capsule, making it simple to support hair strength and luster daily.

The added Amla extract and Vitamin C give that extra boost for overall hair health, whether your curls or straights need some love.

Plus, it’s gluten-free and free from common allergens, making it accessible for most.

While results take patience and consistency—generally a few months—you'll appreciate its trusted brand heritage since 1998.

If you're after a straightforward way to nourish your hair from the inside out, this supplement deserves a spot on your list.

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Price history for NeoCell on Amazon

Swanson Keratin

Swanson Keratin (From Tibetan Wool) - Natural Supplement Promoting Healthy Joints, Hair, Skin & Nails - Helps Nourish Healthy Connective Tissues - (60 Capsules, 50mg Each)
Highlights
Supports Hair & Skin
Easy to Swallow
Nourishes Nails

Swanson's premium keratin supplement is a solid choice for those seeking healthy hair, skin, and nails.

The formula is easy to swallow and packs fibrous proteins that help nourish connective tissues and promote overall vitality.

While some may watch the price, many find the benefits worth it, especially with consistent use.

Keep in mind, individual results can vary, but with a star rating of 4.4, it’s a reliable pick in the supplement world.

If you're looking for a straightforward way to support your beauty goals, this supplement deserves a spot on your shortlist.

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Price history for Swanson Keratin on Amazon

Nutricost

Nutricost Keratin Hydrolized Peptide Capsules - 500MG, 120 Capsules (60 Servings) - Non-GMO, Gluten-Free Formula
Highlights
Supports hair growth
Strengthens nails
Non-GMO and gluten-free

Nutricost's Keratin Hydrolized Peptide Capsules deliver a solid 60-day supply that supports daily hair and nail health.

The capsules are non-GMO and gluten-free, catering to various dietary needs without sacrificing quality.

While we wish the dosage per capsule were a bit higher, the consistent support for hair strength and overall vitality makes it a worthwhile addition to your routine.

Although there’s no direct data on hair growth, many users report improved resilience and shine.

Overall, Nutricost offers a reliable, budget-friendly option you can trust to help keep your hair looking its best.

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Price history for Nutricost on Amazon

Olly Ultra Strength Hair Softgels Keratin Supplement for Hair Growth

OLLY Ultra Strength Hair Softgels, Supports Hair Health, Biotin, Keratin, Vitamin D, B12, Hair Supplement, 30 Day Supply - 30 Count (Packaging May Vary)
Highlights
Supports thicker hair
Helps reduce hair fall
Boosts overall hair health

OLLY Ultra Strength Hair Softgels pack a punch with a blend of biotin, keratin, and silicon—key players in supporting thicker, fuller hair and reducing hair fall.

The softgel format is a breeze to take, with a pleasant strawberry scent that makes daily routine feel a bit more fun.

While results do take some time to show, the overall boost in hair health and resilience makes it worth the wait.

Just keep in mind, those with allergies should check ingredients carefully, as reactions are possible.

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Price history for Olly Ultra Strength Hair Softgels on Amazon

Reserveage Nutrition Keratin Hair Booster

Reserveage Nutrition Keratin Hair Booster with Biotin & Resveratrol, Hair and Nail Growth Supplement for Men and Women, Supports Healthy Thickness and Shine with Biotin, 60 Capsules (30 Servings)
Highlights
Supports healthy hair growth
Contains keratin absorption
Nail and hair strength

The inclusion of Cynatine HNS Keratin truly makes a difference in supporting hair resilience against styling damage, coloring, and everyday stress.

It’s a smart choice for those looking to boost not just hair volume, but also the strength of nails.

Plus, it’s gluten- and dairy-free, fitting seamlessly into various lifestyles.

Keep in mind, results can vary depending on individual hair health and consistency, and while it’s packed with benefits, long-term effects are still being studied.

Overall, it’s a solid, holistic approach to hair and nail wellness with a proven track record.

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Price history for Reserveage Nutrition Keratin Hair Booster on Amazon

Clean Nutraceuticals Collagen Pills

Clean Nutraceuticals Collagen Pills 1000mg Biotin 10000mcg Keratin Saw Palmetto Hyaluronic Acid - Hair Skin & Nails Vitamins & DHT Blocker with Vitamin E Folic Acid Pumpkin Seed MSM - 90 Count
Highlights
Contains full hair vitamins
Improves hair strength
Affordable alternative

MultiMane packs a punch with 16 potent ingredients, combining collagen, biotin, hyaluronic acid, and even saw palmetto—perfect for tackling hair growth from multiple angles.

It's a one-stop-shop, replacing numerous bottles cluttering your cabinet.

The formula supports not just hair, but also nails and skin, making it a versatile choice for overall beauty.

While scientific evidence isn't bulletproof and hormonal responses vary, the affordable price point and comprehensive blend make it worth considering.

If you're after convenience and coverage, this is a top contender for your hair growth journey.

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Price history for Clean Nutraceuticals Collagen Pills on Amazon

American Standard Biotin Keratin Supplement for Hair Growth

Biotin 20,000mcg with Keratin, Coconut Powder and Zinc, Hair Growth Supplements, Biotin Supplements, Healthy Hair Skin & Nails for Adults,120 Veggie Capsules, 120 Day Supply
Highlights
Supports Hair and Skin
High Potency Biotin
Pure, Quality Ingredients

American Standard Supplements’ Biotin with Keratin is a powerhouse for supporting luscious hair and glowing skin.

The high potency of 20,000mcg of Biotin daily works wonders for boosting hair strength and volume, while the added keratin helps tame frizz and improve texture.

Plus, the zinc and coconut powder enhance overall skin and hair health.

Made in the USA with pure, third-party tested ingredients, it offers peace of mind for quality-conscious users.

Just one capsule a day is enough to see the benefits, making it a simple, effective part of your beauty routine.

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Price history for American Standard Biotin on Amazon

VITBOOST

Biotin with Hyaluronic Acid, Collagen and Keratin – 25000 mcg Hair Growth Vitamins for Men and Women – Nails and Skin, USA Made - Third Party Tested, B1, B2, B3, B6, B7 Complex - 60 Capsules
Highlights
Supports hair growth
Enhances skin elasticity
Made in USA quality

The Biotin Collagen & Keratin Supplement from Fresh Leaf Nutrition offers a potent blend designed to boost your hair, skin, and nails from within.

Its combination of biotin, collagen, and keratin works synergistically to promote thicker, fuller hair and improved elasticity for youthful radiance.

Made in the USA and third-party tested, it guarantees quality and safety.

While results may require patience and consistent use, the clean ingredients and visible support for hair health make this a reliable choice for those seeking natural beauty enhancement.

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Price history for VITBOOST on Amazon

New Elements Biotin Supplement

Biotin Supplement 10000mcg with Collagen Peptides Keratin and Pumpkin Seed Oil for Hair Skin and Nails | Hair Growth Supplement for Women & Men | Biotin and Collagen Supplements for Hair Loss
Highlights
All-in-one formula
Easy to swallow gels
Enhances hair & nails

The all-in-one formula packs a punch with biotin, collagen, keratin, and pumpkin seed oil, working together to support stronger hair, healthier nails, and radiant skin.

The easy-to-swallow gel capsules make daily supplementation hassle-free, although some might find the size a bit large.

While it doesn’t promise overnight miracles, consistent use shows promise in minimizing hair loss and boosting growth over time.

With a solid average rating of 4.3 stars from satisfied users, it’s a promising choice for those looking to nourish their hair from the inside out.

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Price history for New Elements Biotin Supplement on Amazon

Hair Thickness Maximizer Keratin Supplement for Hair Growth

Biotin + Soluble Keratin - 10000 mcg Biotin with Cynatine Keratin - Vitamins for Men & Women's Hair Growth - Vegan Hair Growth Supplement
Highlights
Supports hair growth
Suitable for all hair types
Made with quality standards

… The Hair Thickness Maximizer formula packs a punch with biotin and soluble keratin, creating a powerful blend to support hair growth and vitality.

It’s designed to suit all hair types—straight, curly, thick, or thin—making it a versatile pick for everyone.

Made in the USA under strict GMP standards, these capsules promise quality and safety.

While results can vary and patience is key, consistent use shows potential for thicker, healthier hair over time.

If you're seeking a safe and effective boost for your hair, this supplement is worth a shot.

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Price history for Hair Thickness Maximizer on Amazon

Olly Undeniable Beauty

OLLY Undeniable Beauty Gummy, For Hair, Skin, Nails, Biotin, Vitamin C, Keratin, Chewable Supplement, Grapefruit, 30 Day Supply - 60 Count
Highlights
Delicious grapefruit flavor
Supports hair growth
Easy to chew

These delicious grapefruit-flavored gummies make it easy to support your hair growth routine without any hassle.

Packed with biotin, vitamin C, and keratin, they provide the essential nutrients your hair needs to look and feel healthier.

Plus, the fact that they’re chewable and fun to take means no more swallowing pills or dealing with unpleasant flavors.

While details on potency are a bit scarce, the overall formulation offers a simple yet effective boost for your hair, nails, and skin.

Perfect for those seeking a tasty, straightforward supplement!

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Price history for Olly Undeniable Beauty on Amazon

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