What it is: Silk Therapy is the original weightless, leave-in silk replenishing and reconstructing treatment.What it does: Repairs, smooths and protects all hair types. Provides incredible shine while filling in the cuticle layer and preventing split ends.What else you need to know: Not tested on animals.Product Options Available are as follows: Size : 12 oz - Biosilk Silk Therapy Original; Size : 2.26 oz - Biosilk Silk Therapy Original; Size : 5.64 oz - Biosilk Silk Therapy Original;