Suggest Treatment For Darker Skin With Brown Spots After Using Duofilm

ok well yesterday i did something stupid... i applied duofilm to some areas on my forehead and then they started to burn so i tried washing with tapwater. the spots have become darker in colour now... drak brown ..and they are slightly wet... as if a fluid from my body or from the duofilm is present. ... can you please suggest what i can do to help them heal faster and without marks?