DALLAS Biotin Thickening Liter Wash Kit
DALLAS

Biotin Thickening Shampoo + Conditioner Liter Set

This thickening duo adds vitality to fine, flat hair while nourishing and strengthening from root to tip.

High-performance

Award-winning

Vegan

Cruelty-free

How to use

Step 1
Apply shampoo from roots and work through ends.
Step 2
Rinse before applying conditioner from mid-lengths to ends.
Step 3
Leave on for 1-2 minutes and rinse.

GET THE EXPERT LOOK

IN THE WILD

Write a Review
average rating 4.9 out of 5
Based on 57 reviews
  • 5 Stars
    55 Reviews
  • 4 Stars
    0 Reviews
  • 3 Stars
    1 Review
  • 2 Stars
    1 Review
  • 1 Star
    0 Reviews
96% of reviewers would recommend this product to a friend
57 Reviews
Reviewed by Linda L.
Verified Buyer
I recommend this product
Hair Type
Straight
Hair Density
Medium
What is your main hair goal?
Volume + Texture
Rated 5 out of 5
Review posted

My new favorite

I am 72 years old with long grey hair. I can honestly say that I can't remember it looking this good. Lays nicely amazing shine and the smell is fantastic!

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Reviewed by Chandra K.
Verified Buyer
I recommend this product
Hair Type
Straight
Hair Density
Fine
What is your main hair goal?
Volume + Texture
Rated 5 out of 5
Review posted

Recent purchase

Have used the Dallas Biotin thickening shampoo and absolutely love it.

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Reviewed by Rebecca S.
Verified Buyer
I recommend this product
Hair Type
Straight
Hair Density
Fine
What is your main hair goal?
Volume + Texture
Rated 5 out of 5
Review posted

the best solution for fine hair I've ever found

I love this shampoo and conditioner, thus the purchase in large quantities. My only complaint was that the pump for the shampoo arrived broken and inoperable- which is very inconvenient since it's a liter bottle. Hoping someone @ R&Co will see my review and send me a replacement

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R+Co

Hi Rebecca! Thank you so much for the amazing 5-star review and for being such a loyal customer - we're absolutely thrilled that the DALLAS Biotin Thickening Kit has become your go-to solution for fine hair! Your satisfaction means the world to us.

I'm so sorry to hear that the pump arrived broken - that's definitely not the experience we want for you, especially with a liter bottle. We completely understand how inconvenient that must be! Please don't worry, our customer service team will absolutely take care of getting you a replacement pump right away. We'll make sure you can enjoy your favorite products without any hassle.

Thanks again for choosing R+Co and for taking the time to share your experience. Customers like you make what we do so rewarding!

Reviewed by Genevieve
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

This makes my hair feel great and gives wonderful volume!!! I love the waynit smells too:)

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Reviewed by Michelle C.
Verified Buyer
I recommend this product
Hair Type
Straight
Hair Density
Fine
What is your main hair goal?
Volume + Texture
Rated 5 out of 5
Review posted

Awesome

This shampoo and conditioner makes my hair feel thick and full

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