Coffee caffeine scientifically proven or gimmick

[Aroi]

Say if for various reasons credit card unavailability, transport costs, travelling, convenience, money or availability reasons I cannot find something to put on my hair, will just rinsing half a cup of coffee over my head everyday morning help?

Or is caffeine unsupported?

 

[Derek Clapton]

Omegalolz. Caffeine works against testosterone. It's super cheap to buy in powder and you need a tiny amount which you can add to a topical liquid.

 

[rrbelloff]

Omegalolz. Caffeine works against testosterone. It's super cheap to buy in powder and you need a tiny amount which you can add to a topical liquid.

Citations?

 

[SnortingFinasteride]

Wtf ?

 

[Derek Clapton]

Citations?