Hypoxia Here i go again, thinking out the box

[champpy]

So ive heard many times that hypoxic conditions can result in hair growth. If I remember correctly, Neogenic said that their product works in a similar way.

My question for you guys, is there any way we can produce a light hypoxic condition on our scalp? IDK, any kind of airtight balloon we can wear to bed that might limit oxygen from reaching the scalp/hair.
I know this sounds crazy but I just taking a shot in the dark.
I was also wondering if keeping the scalp at a lower temperature for parts of the day would induce hypoxic conditions in the scalp. You know, like wearing a chilled ballcap filled with frozen towels.
I have read that reduced oxygen flow to the scalp helps hair grow. Only two ways I can think to do that is to slow down blood flow via keeping the head cool, or maybe isolate the scalp from the oxygen around it and see if that helps create a hypoxic condition.

Not going to lie guys. Im a bit drunk while I type this but hopefully my point is getting across. Anyone have any other ideas on how to create a hypoxic condition on the scalp?? (something other than Neogenic)