Think of it as a radical body modification. Suppose someone wasn’t really a fan of having hair at all and wanted to just not. Most of the scientific research on hair loss has been about stopping or reversing it, but in all that research have we learned whether we could cause it to happen on purpose? I don’t mean conventional hair removal, and I don’t mean laser or electrolysis which both have significant limitations and wouldn’t be feasible for total hair loss on the entire body.
I mean like a vaccine for hair, an injection someone could take that would cause their immune system to attack all their hair follicles in the same way we see in alopecia universalis, so they have literally no hair at all anywhere on their body permanently. It feels like it should be possible, especially now with the increasing use of mRNA vaccines.
Given the knowledge base in inducing hair growth, I would think that developing a treatment like you’re describing would be in the realm of possibility.
That being said, a medical treatment to loose all hair likely wouldn’t sell given the human aesthetic preference for a head of hair seeming to be almost hard coded in humanity as a sign of virility.
The tech is likely there, but the demand isn’t.