SYNCHRO SKIN gelstick concealer 304 2,5 gr SYNCHRO SKIN gelstick concealer #304 2,5 gr is a lightweight, creamy concealer that provides medium to full coverage. The formula blends easily and is waterproof and transfer-resistant, so you can look your best all day long. The gelstick has a silky texture that feels comfortable and lightweight on the skin. The formula is also enriched with hydrating ingredients, so it won't cake or crease. It provides a natural-looking finish that won't settle into fine lines or wrinkles. The #304 shade is a neutral beige that is perfect for light to medium skin tones.