Matthew McConaughey opened up about the luck he's had with hair growth over the past few decades, revealing that he has been using an all-natural topical ointment daily for the past 20 years in order to maintain his lengthy locks.

The 52-year-old actor, speaking with LADBible in an interview published Saturday, said that he began noticing he was losing his hair dating back in the late 1990s, recalling how he discovered a 'baseball-sized bald spot' on the top of his head. 

'I got a picture [from a] turn of the millennium party in 2000 in Jamaica, I was looking down laughing and there was a baseball-sized bald spot on the top of my head,' the actor said.  

He also says his hair loss was visible in several movies that he made at the time, including the hit 2001 romantic comedy The Wedding Planner, in which he starred alongside Jennifer Lopez.  

'You can go back and look at things like The Wedding Planner and those things. I mean, you'll see, I was losing hair,' he said. 

In his 2020 book Greenlights, the Lone Star State native said that he shaved his hair loss became so bad, he decided to shave his head in late 2000 in an attempt to hide his thinning locks, explaining to LADBible: 'I had a silver dollar back here. So I shaved it off because I'd read, you know, hey, get a fresh start, shave it off.'

The actor then joked: 'I even heard the stuff like, "Do it on a full moon."'

After shaving his head, McConaughey decided to try and stimulate the growth of his hair, revealing that he began applying the topical ointment Regenix to his scalp 'once a day for ten minutes'.  

The on-screen star insisted that he has never used any other treatment or drug to try and grow his hair, noting that he believes his luscious locks are the result of his commitment to using the topical ointment so consistently.