Biosilk Silk Therapy Original, 355 ml, Hair Serums for Women. This non-rinse hair care provides an immediate dose of intense hydration and nutrition. It smooths and restores your hair's natural shine and the integrity of its structure, promoting regeneration and easier detangling. Simply apply to towel-dried hair and style as usual for healthy, beautiful hair. Characteristics: provides hydration and nourishment for your hair, has regenerative effects, leaves hair beautifully shiny and full of vitality, makes hair velvety smooth. How to use: Apply to towel-dried hair. Do not rinse. Style your hair as usual.