Years ago I took the skin off my shoulder having taken a slide through some gravel - took ~3 months for the skin around the edges to grow in and meet in the middle (was told much later that this was likely a candidate for a skin graft - there was really nothing left). Even years later, the skin on the point of my shoulder was thin and very sun-sensitive. In my limited experience, just keep it clean and be patient. Not sure why you're keeping it wet, though - I would have thought drying it out would be better - isn't scabbing over what it's supposed to do?