Clear Coat is a clear protection that is applied over your cars paint. Since your clear coat protect your cars finish it is really important to protect your clear coat. This is why a wax, paint sealant, or ceramic coating is needed. These protect help protect your clear coat from contaminates from imbedding them self, protect from UV damage, and oxidation. When your clear coat goes without protection is can become oxidized this causes your clear coat to take in more UV instead of reflecting it. This will eventually burn your clear coat off.