- This hair serum smoothes, conditions and seals strands, leaving hair silky, shiny and frizz-free in any weather. Lightweight silicones smooth, condition and seal hair with added shine. Speeds up drying so you get silky-smooth results in less time. This product is paraben free, gluten free, vegan, and color safe. Rub one pump into hands and apply to damp hair starting at the ends and working toward the scalp. Style as desired. Very concentrated.