Sebastian Body Double Thick-In Conditioner. What it is: Sebastian Body Double Thick-In Conditioner is a weightless moisturizing conditioner that provides excellent slip to instantly detangle and smooth hair. What it does: Soy and Wheat Proteins offer body and resilience without a heavy feel. What else you need to know: Weightless moisturizing shampoo lathers thick and airy Silk Proteins and Pro-vitamin B5 offer body and manageability without a heavy feel Body doubles the body of fine and thin hair Product Options Available are as follows: Size : 10.2 oz - Sebastian Body Double Thick-In Conditioner;