My vulva :(

So I suffer from dermatitis since I was a year old and I've been noticing that my vulva is kinda dry and it has little scabs from all the scratching....so could it be the gel I use to shave? Because I'm allergic to many quemicals, colors, scent in shampoos, soaps, even my detergent is free clear.. anyways...any advice on how to keep it moisturized ? With a cream that doesn't have color or scent or harsh chemicals?