The_Mentalist put together a detailed post about how to formulate a cetrizine solution.
I would send y'all to the actual thread but being a new member, I can't post URLs. Instead, I've just copied and pasted his recipe. Everything below is from the user, The_Mentalist (major probs brah)...
bump
I have a question in regards to the lotion's suitability for me. In the FAQ post, it's mentioned that one of the ingredients (DGLA) is a powerful vasodilator. This fact makes me uncertain as to whether I'd be able to use the product as I'm unable to use minoxidil due to it's blood...