Your skin dry or any this product can be used when needed. Will this product gently gush a few times on the surface of the skin, then gently on the surface of the skin flap with both hands, until the product is absorbed by skin. Can also be spray this product on cosmetic cotton, then use make up cotton wiped gently on the surface of the skin. Please pay attention to avoid eyes when directly spray on the face, if gets into eyes, please rinse with plenty of water.