Olaplex No. 3 Hair Protector is a versatile treatment for dry, damaged, or colored hair, designed to repair and strengthen. Used once weekly or 2–3 times for severe damage, it’s applied to damp, towel-dried hair and left on for at least 10 minutes before shampooing and conditioning. Paired with Olaplex No. 6 Bond Smoother, a leave-in styling cream, it eliminates frizz for up to 72 hours while moisturizing and repairing all hair types.