Sebastian Body Double Thick-Extreme Leave-in Treatment is an easy to use, 2-step thickening treatment interlocks with hair to expand the diameter of each strand. Fine or thin hair is transformed into thick, fortified hair with double the body.

Smoothes flyaways, controls static and offers long-lasting thickening benefits through 2 shampoos. Colour safe. Use 1-2 times per week for best results. Best used with entire Body Double system for maximum thickening results.