My son who is 3 has still got patches of cradle cap. I have tried Dentinox which was awful and also a mild shampoo for problem scalps from Lush but to no avail. Should I be worried? Is it normal for a child to have cradle cap at 3? Have any mumsnetters got a fullproof cure or any advice about how to treat it (bearing in mind my son has sensitive skin)? Thanks........