I dont want to link this because it is the sun, so heres the paragraph:
McGregor revealed how he's hoping to work with Erin on an exfoliator for the scalp that he believes will stop men's manes from receding so rapidly.
Speaking to British GQ, he said: "My sister’s a hairdresser and listen to this: she’s just brought out this exfoliating scrub.
"I’m actually of the belief that you can reverse the effects of male pattern baldness if you exfoliate the scalp.
"The hair cannot grow if the scalp is covered. If you’re putting product in your hair or you’re washing it with stupid hotel shower stuff... If the scalp is clogged up, the hair follicles can’t grow. They die.
"Men don’t look after it. They throw anything in it, then eventually they lose it. But if men started looking after that you could catch it before it happens.
"Now, maybe not stopping it all, because you get older. But you can certainly – and I mean certainly, certainly, certainly – slow it down drastically.
"[This is] something I’m interested in. I’m going to start thinking about how I can get my name on that stuff and make it into a business, so we’ll see what happens."
He doesnt say exactly, I am balding, but he clearly has been receding for many years. And he covered the diffuse or bald spot with a slicked back hairstyle in Khabib fight. Now hes going buzzcut. He apparently doesn't know a lot about androgenic alopecia.
Also, from his unusually good physical talents and ahem high libido makes a lot of sense that he has very high test level.