Samy Fat Hair ‘0’ Calories Thickening Shampoo is lightweight, sulfate-free and 100% vegan – the first step toward thicker, fuller hair. Fat Hair transforms fine, thin hair into luscious, thick locks. This ‘0’ calorie line contains Samy’s exclusive FH4 thickening complex. Designed with a blend of natural extracts and proteins, FH4 penetrates each strand, increasing diameter from the inside out. Samy Fat Hair ‘0’ Calories Thickening Shampoo has received several accolades including a Cosmopolitan Beauty Award.