Designed for deep cleaning, with the cleansing power of a concentrate, this formula is laboratory proven to effectively remove nearly all makeup residue*. It removes what you seeand even impurities you cant see for a new brush clean.> dermatologist tested for gentleness> no alcohol or phthalates> quick, clean rinse> tested safe for all Real Techniques brushesUsage Directions: Use weekly Squeeze a drop of gel onto palm or textured surface Add warm water to your chosen surface Swirl bristles into gel and water Rinse until clean. Careful not to immerse base of bristles Reshape and dry flat or upside-down CAUTION: FOR ADULT USE ONLY. KEEP OUT OF REACH OF CHILDREN. FOR EXTERNAL USE ONLY.*Using liquid foundation from a leading makeup brand