BioSilk Volumizing Therapy Conditioner 12 oz BioSilk Volumizing Therapy Conditioner ✨ Full size 12 fl oz / 350 mL. Lightweight conditioner made to add volume and body while leaving hair soft and shiny. Formulated with silk + rice proteins. New / unused. Retail: $21 through BioSilk/CHI. #BioSilk #HairCare #Conditioner #Volumizing #Beauty