- Biosilk Therapy Glazing Gel is a light-hold sculpting gel that distributes evenly to give body and shine without stickiness. Ideal for roller settings, blow drying and wet looks. Silk contains 17 of the 19 amino acids in hair and is the strongest fiber in the world...equal to steel. Silk reconstructs damaged cuticles, strengthens hair, adds moisture, and revitalizes and rejuvenates hair for soft, supple, shiny results.