Nail coating is a type of cosmetic treatment for nails that can be done at home or in a salon. The two most common types of nail coating are ENAMEL and POLISH. ENAMEL is a type of paint-like substance that is applied to the nails and then cured with a UV light. It provides a glossy finish and is more durable than POLISH. POLISH is a type of liquid that is applied to the nails and then allowed to dry. It provides a glossy finish but is not as durable as ENAMEL.