Our hair serum contains keratin, argan oil, vitamin A. It moisturizes, improves hair breakage, and makes hair soft and shiny. The way it works is simple:1. Open the package and remove one capsule. 2. Squeeze open the capsule and pour the essence into the palm of your hand .3. Gently massage the hair with your hands . 4. Use it daily for better results. And it can make our hair soft and not easy to knot.