Farouk Biosilk Silk Therapy 17 Miracle Leave-In Conditioner Biosilk Silk Therapy17 Miracle Leave-In Conditioner. Light and Airy...yet...Thick and Strong. Silk Therapy 17 Miracle Leave-In Conditioner has 17 uses to condition and hydrate Hair and Skin instantly: Conditions and hydrates hair and skin instantly Provides volume and body Controls and defines curls Reconstructs and repairs dry and damaged hair and skin Strengthens the hair Revives dull lifeless hair and skin Smoothes the cuticle Controls frizz and flyaways Prevents split ends Stops hair breakage Seals the hair Protects hair color from fading Protects hair and skin from environmental damage Thermal protector for blow drying Thermal protection from flat and curling irons Leaves hair and skin soft and silky Adds incredible shine