You really think castor is that terrible ? I mix castor with DMSO, 70% castor and 30% DMSO. I don't think you want to use any higher than 30%, causes scalp irritation and too much castor gets absorbed which leads to diarrhea. I leave it in for minimum 2 hours, longer if I can. It has without a doubt made the biggest difference in my regimen besides finasteride. Had it in for 6 hours yesterday, ran my hands through my hair earlier and not a single hair was shed.
Maybe I'm an abnormal responder to it, but it really has stopped my hair loss in its tracks. I came across a research paper from China that did computer simulations for compounds that could potentially inhibit PGD2 synthase, and ricinoleic acid ( the main component of castor ) was one of the best compounds based on potential efficacy, skin penetration, and tolerability. So add in the fact that it's a known ep3 agonist ( just like pge2 ) you have every reason to add it to your regimen. Even if you can only afford to leave it in for 1 hour it's still worth the hassle.
