Our natural sunscreen can change texture, we call it "goose bumps" when it gets cold. This does not look particularly fabulous in the tin, but does not affect performance or skin feel. Cocoa butter has six crystal structures, and when it gets cold it starts to change it's structure, making goose bumps. You don't need to do anything to fix this, but if the look bothers you, put your tin in a hot car for a couple of hours and the warmth will smooth the surface again.
