100% Natural | Silicone-free Best for: taming frizz and tangles Frizz-free sheen by day This light; silicone-free formula penetrates each strand to control frizz and flyaways and protect hair from damaging elements during the day. Nourishment by night Use one pump as a leave-on treatment to allow the nutrient-rich plant oils to bring back your hair's natural health as you sleep. Health in; beauty out Most hair serums are silicone-based. But silicone gives hair shine by coating it like cheap plastic; starving it from proper nourishment. Our smoothing serum uses all-natural soybean; broccoli; sunflower and avocado oils - a true feast for your crowning glory.