I'm using it only for a month. But what i notice is that, the places where i apply it where i normally have very greasy skin stay dry the whole day. So no sebum production.
I've got it from k**tingchina yanez. It's 400 dollar for 1 gram. I think that cayman produced the wrong chemical. But 1 gram is too much for 1 person, you should split it with some other users. You can use the tested acne dosage which is 15mg in 60ml(70% ethanol 30%PPG ==> 0,025%) and use 1ml 2X daily(Which will last you 1 month with only 15mg). Or some users also use up to 0,075% without noticing side effects. I think it was wesley who used the 0,075% dosage and did some blood tests after 3 months usage and didn't notice anything different. You can also mix the ASC-J9 in your minoxidil solution.