I mix it with Ellin Lavar Hair Oil and a vial of Phyto leave-in. The Phyto is water-based. I mix it fresh on the night that I put it on my scalp. Two Tab. of MN/4%, one vial and one Tab. of oil. I don't make up a mix with a lot of stuff because I like the effect that the MN has on it's own. Only use the other two items because I don't like to leave anything heavy on my scalp ever; and this thins it down to a thin lotion-type creme.