Collagen Duo

Damage Repair

Collagen Duo

83 reviews
$ 51 $ 58

Repair Damage & Reconstruct Strands

This dynamic duo of shampoo and conditioner is formulated with scientifically proven and natural ingredients which target damage by reconstructing and hydrating the hair strands from inside out. Preventing breakage, sealing split ends, and rejuvenating your hair while eliminating frizz and increasing plumpness.

No Added: Silicones, Parabens, Sulfates or Sodium Chloride

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Why It Works

Strengthens Hair Fiber After Just 2 Uses
Improves Elasticity & Shine
Repairs Damage Inside & Out
Key ingredients

Powered by clinically-inspired ingredients

Each ingredient is selected for a clear purpose: repairing damage, improving elasticity, and restoring healthier-looking hair.

Hydrolyzed Collagen

Hydrolyzed Collagen

Improves elasticity and resistance to breakage

Strength Repair
Hydrolyzed Keratin

Hydrolyzed Keratin

Rebuilds the hair’s natural protein structure

Strength Repair
Rose Hip Oil

Rose Hip Oil

Rosa canina

Protects against environmental damage

Antioxidant Hydration

Our Formula

Powered by Hydrolyzed Collagen and Hydrolyzed Keratin, this protein-rich system helps reinforce weakened strands while nourishing botanical extracts and conditioning agents improve manageability and smooth frizz.

Full ingredient list

Ingredients

Explore the proteins, botanical extracts, and nourishing ingredients behind our formulas.

View full ingredients

Shampoo: Water, Sodium Lauryl Glucose Carboxylate & Lauryl glucoside, Sodium Cocoyl Isethionate, Cocoamidopropyl Betaine, PEG-120 Methyl Glucose Dioleate, Methyl Gluceth-10, Coco-Glucoside & Glyceryl Oleate, PEG-40 Hydrogenated, Castor Oil, Coconut Oil, Glycol Distearate & Laureth-4 &Cocamidopropyl Betaine, Hydrolyzed Keratin Protein, Hydrolyzed Collagen, Phenoxyethanol, Aloe Barbadensis, Panthenol, Fragrance.

Conditioner: Water, Cetrimonium Chloride, Cetearyl Alcohol, Behentrimonium Methosulfate, Isopropyl Palmitate, Lanolin Oil, Cetyl Alcohol, Quaternium 31, Hydrolyzed Keratin Protein, Hydrolyzed Collagen, Rosemary Leaf Extract, Rosehip Seed Oil, Phenoxyethanol, Ethylhexylglycerin, Witch Hazel Leaf Extract, Chamomilla Recutita Flower Extract, Mallow Extract, Peppermint Leaf Extract, Primula Veris Extract, Alchemilla Vulgaris Extract, Veronica Officinalis Extract, Melissa Officinalis Leaf Extract, Achillea Millefolium Extract, Citric Acid, Calendula Flower Extract, Sage Leaf Extract.

Formulated Without

Sulfates, Parabens, Silicones, Sodium Chloride, Mineral Oils, Phthalates.

Suggested Use

Apply Collagen Shampoo to wet hair and massage gently into the scalp to create a rich lather. Rinse thoroughly and repeat if desired.

Follow with Collagen Conditioner, applying generously through the mid-lengths and ends. Leave on for 2 minutes, then rinse thoroughly.

FAQ

Frequently Asked Questions

Everything you need to know before you start.

What makes Collagen and Keratin work well together?

Collagen helps improve elasticity and flexibility, while Keratin helps reinforce and strengthen damaged areas of the hair fiber.

Will it weigh hair down?

No. The formula hydrates and repairs hair while maintaining softness and movement.

Is it safe for color-treated hair?

Yes. The formula is sulfate-free and gentle on color-treated hair.

Does this line help with growth and thickening?

The line helps with damage repair by restoring the hair’s natural integrity and increasing elasticity, which in turn, prevents early breakage and allows hair strands to fully develop. By helping with the overall health of your hair and scalp, the line helps with hair growth, but to specifically stimulate growth and thickness, we would recommend our Freshening Line.

How does it smell?

The formula is lightly citric with notes of lavender.

Does it help with frizz?

Yes. The conditioning ingredients help smooth the cuticle and improve manageability, resulting in less visible frizz.

Is this suitable for damaged or chemically treated hair?

Yes. The duo was specifically designed to help support hair affected by heat styling, coloring, bleaching, and other forms of damage.

Customer Reviews
4.9 Based on 83 Reviews
5 ★
96% 
80
4 ★
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Customer Photos
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Collagen Line - Customer Photo From Christa J.i
Collagen Line - Customer Photo From Christa J.i
Collagen Conditioner - Customer Photo From Kay Mierendorfi
Collagen Shampoo - Customer Photo From Heather Ortegai
Collagen Line - Customer Photo From Alice Lindsayi
Collagen Line - Customer Photo From Cindy i
Collagen Line - Customer Photo From Cheyenne Mitchelli
Collagen Line - Customer Photo From Cheyenne Mitchelli
Collagen Mask - Customer Photo From Jacquelyn Andersoni
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CJ
01/14/2023
Christa J.
United States United States

Smells amazing

This is great since it is safe for colored hair. It smells amazing. It actually lathered up very nicely. It detangled my hair, dramatically reduced my frizz but still gave me lots of body. Which I have fine, wavy, extremely frizzy and tangly hair. Lately my hair is flat. This helped a lot! The hair photo has no products in is from using everything the night before. Usually my hair is a frizzy mess in the morning.

Kerotin Collagen Shampoo ReviewKerotin Collagen Shampoo Review
Was this helpful?  0    0
01/14/2023

Kerotin

Hi Christa! Thank you so much for taking the time to share your experience with the products and we appreciate your honest feedback!

KM
12/19/2022
Kay M.
Canada Canada

Works Well

This conditioner works so well on my hair. Love it!

Kerotin Collagen Shampoo Review
Was this helpful?  0    0
HO
11/22/2022
Heather O.
United States United States

Collagen shampoo/conditioner is the BEST

I’ve been using the collagen shampoo and conditioner for over a year.. and Omg!!my hair has never been so healthy!!! I can get it colored abs it stays in for months!!! I LOVE the whole collagen line… my hair feels soft, healthy and new hair has started to grow back!! Thank you KEROTIN!!!

Kerotin Collagen Shampoo Review
Was this helpful?  0    0
AL
08/14/2022
Alice L.
United Kingdom United Kingdom

Best line ever.

I had such a good experience using these products. They were easy to use, beautiful packaging and gave tips on what other products they work best with. My favourite part was the collagen mask which as soon as I applied I was shocked at how much softer my hair felt. After two uses my hair genuinely seemed healthier.

Kerotin Collagen Shampoo Review
Was this helpful?  5    0
08/16/2022

Kerotin

We're glad that you liked our Collagen Line. Thank you so much for sharing your hair journey with us. Don't forget to update us on your hair journey!

A Kerotin Customer
C
07/28/2022
Cindy
United States United States

Fuller, healthier

I purchased the hair growth vitamins and the thickening spray, the oil, and a sample of shampoo and conditioner. I’m going to be a customer for life. I’m 68 yrs old with long hair and have had more people mention how great my hair looks since I started using Kerotin products. I also purchased the scalp massager which I absolutely love!

Kerotin Collagen Shampoo Review
Was this helpful?  4    1
07/28/2022

Kerotin

Cindy! Thank you so much for taking the time to share your experience with our products! We are happy to be a part of your hair journey.