• Keratin Hair Growth Booster Capsules
  • Keratin Hair Growth Booster Capsules
  • An image that shows Collagen IV and Collagen VII in skin cells with Keratin
  • Keratin Hair Growth Booster Capsules
  • An image that shows the difference after 6 days Keratin treatment
  • Keratin Hair Growth Booster Capsules

Keratin Hair Growth Booster Capsules

Regular price $35.00 Sale price $45.00
Unit price per
  • 35% increase in hair thickness in just 14 days
  • Made with hydrolyzed lambwool, a vegetarian collagen
  • Includes cysteine, an integral amino acid for healthy hair that collagen lacks.
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Our hair booster capsules are formulated with a digestible, functional form of keratin sustainably sourced from lamb wool to help your hair grow thicker. Keratin is a protein that is similar to collagen (but vegetarian) and a crucial component of healthy hair and follicles (not to mention skin and nails). It includes cysteine, an integral amino acid for hair health.

When you take keratin, it does many things: it boosts hair growth, reduces breakage, and protects from further damage (like from hot styling tools or coloring treatments). In just 30 days, users have reported thicker hair, stronger follicles, glossier strands, and reduced shedding.

But it's not just for hair! Keratin also is known to nourish skin cells, demonstrating a 35% faster skin cell growth and reversing wrinkle formation, in addition to:

  • Helping improve skin elasticity
  • Supporting nail strength
  • Promoting body’s glutathione and taurine production AKA antioxidants
  • Triggering the body’s production of collagen types IV and type VII: these collagens are found in the lining of hair follicles to keep them strong and between the dermal and epidermal junction in the skin, keeping skin firm and tight.
In just 30 days, users have reported thicker hair, glossier strands, and reduced shedding.
Adding keratin to your daily intake of collagen will give your hair and skin the extra boost of love & support that they deserve!
  • hydrolyzed
  • proven results
  • Nutritional information
  • Hydrolyzed Keratin 400,000 mcg
  • Biotin Vitamin B7 5,000 mcg
  • Cysteine 40,000 mcg
  • Halal & Kosher. 0 Metals. Non GMO. Vegetarian.

Customer Reviews

Based on 211 reviews
80%
(169)
8%
(16)
4%
(9)
1%
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7%
(14)
J
Jackie (US)
Worth the hype

I was skeptical because I have another brand of collagen and it claims to be unflavored and tastes awful. Glad I gave this one a try, it’s delicious and actually tastes just like banana milk! Definitely my go to now and worth the extra cost.

P
Patricia

Went great with my protein coffee. 10/10

P
Patricia

Absolutely delicious

P
Patricia

It was absolutely amazing. Best tasting collagen ever.

K
Kate L. (US)
Melts and tastes like a dream

Melts and tastes exactly like banana milk. A nice change from the typical collagen I get. The taste alone had inspired me to purchase other flavors. I’m hooked.

C
Cryss H (US)
Soo good

I love it. I try to take it every morning with my vitamins and I am seeing a difference!

N
Nessbs (US)
Love love love

I am completely in love with this collagen. Tastes great and has my skin glowing!

S
Sally C.
Flavor is just AMAZING

LOVE LOVE LOVE

I was told that consuming collagen is the best way for your skin. With that, I was on the search for a tasty collagen product that I would enjoy yet would help my skin.

So far, I've tried both Banana and Strawberry and they have been really really good. I drink this now instead of coffee or tea and it has definitely been a game changer for my morning routine.

Although it is on the pricier side, I say it's definitely worthed it.

J
Jaclyn M. (US)
My Favorite!

I loooovveee this flavor, I use it in anything from smoothies, teas, juices, or just by itself.

K
Kristine Einang (NO)
Clean and effective

Top notch ingredients, great taste and can be used for so much! I’m sold!!!

FAQ

  • See our comparison chart side by side HERE.

    Both bovine (cow-derived) and marine (fish-derived) collagen have excellent benefits, but they differ in source, absorption, and targeted effects—which is why marine collagen is often more expensive. Here’s a breakdown:

    Bovine collagen comes from cows, often sourced from their skin, bones, or cartilage. It primarily contains Type I and Type III collagen, which are excellent for supporting skin, bones, and joints. On the other hand, marine collagen is derived from fish scales or skin and mainly contains Type I collagen, the most abundant type in the body, responsible for skin health and anti-aging benefits. Since Type I collagen is the most bioavailable and crucial for skin structure, marine collagen is often seen as superior for beauty benefits.

    Marine collagen has a smaller molecular size (4,000 Daltons in Crushed Tonic's marine collagen compared to 5,000 Daltons for bovine). Smaller peptides allow for faster and better absorption, making marine collagen particularly effective for skin health and anti-aging. While bovine collagen is still highly effective, it absorbs slightly slower due to its larger peptide size. (FYI - other bovine collagens are 9,000 Daltons!)

    Marine collagen is better suited for improving skin hydration, elasticity, and reducing wrinkles. It’s also popular for beauty-focused results, including strengthening hair and nails, and it supports bone density and joint health as well. Bovine collagen, by contrast, excels in promoting joint health, gut support, and general body repair. Since it combines Type I and Type III collagen, it’s particularly beneficial for tissues, muscles, and bones.

    Marine collagen tends to be more expensive because fish-derived collagen production is costlier. Additionally, it’s generally considered purer and less likely to cause inflammation or allergies compared to bovine collagen. Its superior absorption and beauty benefits also increase demand, contributing to the higher price.

    Crushed Tonic’s marine collagen is tested for zero heavy metals and is both kosher and halal certified, making it suitable for a broader range of consumers. Similarly, Crushed Tonic’s bovine collagen is also kosher and halal certified and free from growth hormones, antibiotics, BSE, and TSE, ensuring a clean and safe product.

    If your main focus is enhancing skin, hair, and nails, marine collagen may be worth the extra investment due to its superior absorption and high Type I collagen concentration. However, if you’re seeking more cost-effective and overall health benefits, such as joint and gut support, bovine collagen is an excellent choice. Ultimately, both are amazing quality sources of protein peptides and you can't go wrong with either!

  • Unflavored pouches contain 150g.

    Every flavored pouch has 150g of collagen, and additional flavoring.

    Matcha, Lucuma and Coffee contain about 185g NT WT.

    Rest vary from 200-300g, depending on flavoring requirements. The more does not mean better, it just means we formulated for a different flavor profile (bolder, lighter etc) required for that specific flavor!

  • We recommend around 5-10g to 20g daily. For best effects on hair and skin, please make sure to consume daily as our bodies cannot store extra amino acids overnight!

  • For unflavored, mix 3 tsp (10g) into 1 tbsp of water.

    For matcha / coffee, mix 1 tbsp (15g) into 2 tbsp of water.

    For other flavors, mix 1-2 tbsp of powder into 2 tbsp of water. *Flavor profile will vary depending on amounts of water used. For best flavor, we recommend 2 tbsp of powder to 2 tbsp of water.

    Whisk aggressively in a bowl, or shake in a reusable bottle for best texture.

  • You can test for quality of collagen by adding it to a cup of water; it should dissolve perfectly as shown here.

    1. It is the most effective. Our tilapia fish skin collagen is the most bioavailable (AKA smallest in size and therefore best absorbed by our body). Tilapia skin also has the highest concentrations of protein and amino acids in their scales. Our bovine collagen also boasts of 5,000 dalton size, compared to 9,000 of other bovine collagen!

    2. It tastes best! Other collagen types are known for a stronger, gamier taste, while both of our collagen is essentially flavorless.

    3. Our collagen is sourced ethically and sustainably; because tilapia is so abundantly over-farmed (and the skin is so often discarded), sourcing collagen from tilapia is the most environmentally friendly.

  • Taking collagen supplements can be helpful during pregnancy and postpartum. Pregnant or breastfeeding women can experience brittle hair and even hair loss, so collagen can help restore hair back to health.

    As the baby grows, more and more pressure is put on your joints.

    Collagen peptides promote joint health by helping to repair joint matrix degeneration and improve long-term joint comfort and mobility, as well as helping to restore bone mineral density and support healthy bone metabolism.
    There’s a LOT of stress put on our joints as we carry the weight of growing baby.

    During breastfeeding

    The postpartum benefits of taking collagen can help with skin elasticity by helping to tighten back loosened skin on the stomach, and preventing stretch marks and hairloss.

    During breastfeeding, women are at risk of bone resorption; therefore, a daily collagen supplement may in turn reduce a woman's risk of osteoporosis later in life.

  • Yes!

    Collagen isn't just for women— as it is with all protein, both men and women can benefit from collagen!


    Our male customers’ love Crushed Tonic for its postivie impact on hair growth and hair loss prevention (especially thickening beard growth) and athletic performance by building muscles and bones.

  • Study 1
    Method: By measuring the time and quality of skin's ability to return to the original state after stretching and pulling it using a cutometer (a skin elasticity meter).

    At week 12, results showed that regular intake led to:

    18% increase in skin firmness

    27.2% decrease in skin elasticity

    22.8% increase in skin hydration

    Study 2

    Method: By measuring the shadows cast by one's wrinkles. At week 12, results showed that regular intake led to an average of -9.73% in length of respondents' wrinkles' shadows.

    Study 3

    Method: By studying perioral and Crow’s feet wrinkles on 95 healthy 55-60 year old females.

    At week 12, results showed that regular intake led to:

    improved skin elasticity

    reduced facial wrinkle appearance

    improved skin complexion homogeneity and radiance

    decrease of the mean score of facial wrinkles

    This study was conducted by CPCAD / Hospital of Nice (France) and biomechanical measurements of volunteers were controlled by certified dermatologists. It was performed according to French regulatory competent authority (ANSM) and approved by the local Ethical Committee (CPP).Study 4Method: By measuring the degree of deformation and the time required for the skin to return to its original state.

    At week 12, results showed that regular intake led to:

    improved skin elasticity

    decreased links

    improved skin complexion homogeneity and radiance

    The Cutometer® DUAL probe (Courage and Kazhaka, Köln, Germany) using a suction method measured a deformation perpendicular to the skin surface. A negative pressure of 450 mbars was applied to the skin through the probe for 2 seconds, followed by a relaxation period of 2 seconds. This cycle was performed 5 times.

  • The benefits of collagen and keratin may take up to 7 days for skin and 14 days for hair.