Unscrew cap to open refill canister. Insert refill canister into bottom of brush. Twist canister into bottom of brush until secure. Remove cap from top of brush. Turn base of brush to unlocked position—it will click. Shake brush upside down to release product. Apply generously to body, face and scalp for sun protection. To wash, turn base of brush to locked position and remove magnetic brush head. Cleanse brush with mild cleanser. Lay sideways to dry.