Anyone UK minoxidil users added tretinoin or similar to help with growth?

[sunlight2]

I know there are compounds which can help with supporting an enzyme that converts minoxidil to the more powerful minoxidil sulfate. Have any UK users added this (Tretinoin is one i believe, but can't find that being sold anywhere in the UK)

 

[jazz1]

Yes, I use tretinoin in my compound mixture and I’m from the UK.

 

[Derek Clapton]

Yeah I got some from china a while ago. You only need a tiny amount. I chuck it in with minoxidil but don't know if that makes it active or if you need to do some mad scientist chemistry stuff, but results haven't improved since, so either it's bunk or like everything else my DHT just laughs at it.