If you like wearing dark nail polish colors, this is the perfect product for you! It works super fast. For natural nails. It does not contain acetone, which reduces the risk of making the nail porous or damaging the natural nail surface. It does not contain oil, dye, or perfume, which can cause discoloration of the nail or leave residues on the nail surface, affecting the adherence of your nail polish. First, quickly dip the fingers of one hand, one at a time, into the bottle. Then, twist each finger against the sponge until the polish is removed.