Setup: This product requires no specific setup. It's ready to use directly out of the packaging. Simply uncap the pencil and twist open the powder applicator. Compatibility: This specific variant is 'Dark Blonde,' ideal for individuals with dark blonde hair or lighter brown hair who desire a natural, well-matched brow shade. Maybelline offers this duo in six shades to match a variety of hair colors. To ensure compatibility, select the shade that best complements your natural hair and skin tone. If uncertain, choose a shade slightly lighter than your hair color for a softer look. Care: Storage: Store the Brow Satin Duo in a cool, dry place away from direct sunlight to prevent the pencil from softening or the powder from drying out. Keep caps tightly closed when not in use. Cleaning: The applicators themselves do not require cleaning. If any residue builds up on the outside of the packaging, gently wipe it with a clean, dry cloth. Avoid using water or harsh chemicals directly on the product. Lifespan: Like all makeup, this product has an expiration period, typically indicated by a 'period-after-opening' (PAO) symbol (e.g., '6M' for 6 months) on the packaging. Adhere to this guideline for optimal performance and hygiene.