Dallas Biotin Thickening Treatment
Our mega-thickening treatment helps build texture for a long-lasting, voluminous effect. It fortifies hair without weight, delivering instantaneous, visible results in minutes.
Visible results after one application*:
- Increased thickness + volume: fiber diameter +1%
- Reduced split ends + flyaway’s through 10 washes
*Clinical tests conducted on chemically treated hair, exposed to extreme damaging conditions of bleaching, washing, blow-drying and flat ironing.
FAQ
How often should I use this treatment?
For best results, apply the treatment once a week or as needed based on your hair’s condition.
Is this treatment suitable for all hair types?
This treatment is designed for all hair types, especially those looking to enhance thickness and reduce flyaways.
Can I use this treatment with other hair products?
Yes, it can be used with other hair products. However, it’s recommended to apply it before styling products for optimal results.
How long does the effect last?
The effect can last up to 10 washes, depending on your hair type and how often you use the product.
Is this product safe for chemically treated hair?
Yes, it is safe for chemically treated hair and has been tested under extreme damaging conditions.

Madeleine Campbell –
I’ve been using this treatment for a few weeks, and my hair looks thicker and more voluminous. It’s a game-changer for my fine hair!
Justin Ogden –
The results are visible after just one use. My hair feels stronger and looks healthier. I would definitely recommend this product.
Alexandra Berry –
I love how this treatment makes my hair look fuller without weighing it down. It’s a must-have for anyone looking to enhance their hair texture.
Bernadette Langdon –
This product has made a noticeable difference in my hair’s thickness and reduced flyaways. I’m very satisfied with the results.
Oliver Miller –
I’ve used several thickening treatments before, but this one stands out. It’s effective and easy to use. Highly recommend!
Harry Graham –
My hair has never looked this thick and healthy. I’m so happy with this purchase and will definitely buy again.
Dan Ross –
This treatment is a great addition to my hair care routine. It helps with volume and makes my hair look more manageable.
Rebecca Forsyth –
I noticed a significant improvement in my hair’s texture after using this product. It’s worth the investment!
Melanie Cameron –
I’ve been using this treatment for a month, and my hair looks thicker and more voluminous. It’s a fantastic product!
Jane Hill –
This product has exceeded my expectations. My hair feels stronger and looks healthier. I’m very happy with the results.
Dorothy Walker –
I love how this treatment makes my hair look fuller without weighing it down. It’s a must-have for anyone looking to enhance their hair texture.
Theresa Mitchell –
I’ve used several thickening treatments before, but this one stands out. It’s effective and easy to use. Highly recommend!
Simon Mills –
My hair has never looked this thick and healthy. I’m so happy with this purchase and will definitely buy again.
Piers Marshall –
This treatment is a great addition to my hair care routine. It helps with volume and makes my hair look more manageable.
Angela Walsh –
I noticed a significant improvement in my hair’s texture after using this product. It’s worth the investment!
Anna Mackay –
I’ve been using this treatment for a month, and my hair looks thicker and more voluminous. It’s a fantastic product!
Boris Peters –
This product has exceeded my expectations. My hair feels stronger and looks healthier. I’m very happy with the results.
Madeleine James –
I love how this treatment makes my hair look fuller without weighing it down. It’s a must-have for anyone looking to enhance their hair texture.
Joan Hemmings –
I’ve used several thickening treatments before, but this one stands out. It’s effective and easy to use. Highly recommend!
Adrian Murray –
My hair has never looked this thick and healthy. I’m so happy with this purchase and will definitely buy again.