This brush requires no setup; it's ready to use straight out of its packaging. It is optimally compatible and designed for use with REFY Cream Bronzer and REFY Cream Blush. While it may be used with other cream-based products, its unique bristle types and shape are specifically tailored to maximize the performance of REFY's cream formulas. To maintain the brush's integrity and ensure hygienic application, clean it regularly. Gently wash the bristles with a mild brush cleanser or baby shampoo and lukewarm water. Rinse thoroughly until the water runs clear, gently squeeze out excess water, reshape the bristles, and lay the brush flat on a clean towel to air dry completely before its next use. Avoid drying upright, as water can seep into the ferrule and loosen the glue.