What you see infront of you is decades of tretinoin raw powder in my hands. My friend basically surprised me for Christmas and mailed me his stash. That bottle below is 4 months of tretinoin at 0.1 percent concentration.
I have enough tret to make 1000s of tubes. If anyone ever needs some kind of special strong solution for some reason just dm me and I'll consider shipping you a batch.
Of course I simply used castor oil as it's the only oil that can dissolve tret at near 100%. However I'll be creating a cream base for normal use. This was just a test and so far so good. Castor oil is hydrating so the most I experience is some redness from time to time.