Tried Retin-A for the first time today. I've never used it before, so I began with a pretty low dose (0.5). I'm planning on using it three times a week (Monday, Wednsday and Saturday), does that sound like a good idea? When I get older I'll use it everyday, but I don't think that's necessary right now. I'm also planning on ordering Green Cream 3 instead of Retin-A since it's more favourable.