Long periods underwater or exposure to running water can make the scabs or softened new skin fall off. This prolongs the healing process. Immersion in cold water for more than a minute or two slows down blood flow, which in turn slows down scar healing.
I had great results with Scarfade. Over 2 years ago I managed to burn my arm when taking something out of the oven. The scar was over 2 inches long and about half an inch wide. I thought over time it would fade but I noticed instead it was getting darker. I did some internet research and found Scarfade. I followed the instructions and used Scarfade twice a day. I saw results right away and after about 2 weeks my scar was virtually gone. I could not be more pleased and more enthusiastic about recommending this product.