Why no one sell concentrated bima ?

[Hairismylife]

Here's the formula from member Tito:

bimatoprost 0.3 mg
benzalkonium chloride 0.05 mg this acts as a preservative and also increases penetration
purified water
sodium chloride/In other words salt
citric acid used as a chelating agent
Sodium hydroxide
sodium chloride

My room mate uses a more simple way
he uses
bimatoprost 0.6 mg
benzalkonium chloride 0.08 mg
citric acid
purified water and methyl alcohol

If anyone can find a chemist to make this then we can start our Bim trial.