Single data point: I had oily skin in my teens and early 20s, stopped using shampoo and limited my soap use in my mid 20s, and have had people who use many prod

Single data point: I had oily skin in my teens and early 20s, stopped using shampoo and limited my soap use in my mid 20s, and have had people who use many products to maintain their excellent skin remark on how nice mine is. Haven't tried going back onto facial soap to test how much of that is due to aging.