Didn’t mean to imply any impairment in sebum production, other than the increase to accommodate for the dryness. (Which can result in overly oily hair when you stop shampooing, which is a feedback loop your wallet really doesn’t need to accommodate for).

For what its worth, my haircare routine consists entirely of warm water and a bit of a scrub.

People are genuinely amazed when I tell them I don’t use shampoo or conditioner lol.