R+CO DALLAS Biotin Thickening Shampoo
Big hair starts in the shower.
R+Co Dallas Biotin Thickening Shampoo is a lightweight volumizing cleanser designed to give fine, flat hair a thicker, fuller-looking feel. Infused with biotin, this formula gently cleanses while helping support hair strength and body—without stripping or weighing hair down.
Perfect for daily use, Dallas creates lift at the roots, improves manageability, and leaves hair feeling clean, airy, and ready for volume-driven styling.
Why you’ll love it
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Adds body and fullness to fine hair
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Lightweight cleanse with volume support
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Helps hair feel thicker and more resilient
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Leaves hair clean, lifted, and touchable
Best for
Fine hair, thin hair, flat hair, and anyone seeking fuller-looking hair with natural movement.