ThinLizzie59
Member
@KiwiMoose, people buy castile all the time -- or at least "Castile", loosely speaking. Dr. Bonner sells his soap as castile even though technically it isn't, and it is widely used for all kinds of purposes (there are like 20 different uses listed on the bottle). I used to buy it too .
@jessica rios, a lot of people here (although not everyone) will say that real soap is not good for hair because of its high alkalinity. You really should do a bit of research. If you do decide to use it, then I don't think you need to thin it out with that much water. Thickening with salt can be tricky; sometimes it works, sometimes it doesn't, but usually I have better luck using a strong salt solution (i.e., not just dumping the salt in the liquid I want to thicken but dissolving it first in a bit of warm water).
I have a very sensitive scalp. However, I made one very gentle soap which I find amazingly GENTLE on my scalp. So, it would depend what your ingredients are. Not all homemade soap is gentle enough to be used on your hair. There is no bar soap on the ‘market’ that I’d dare use on my hair. So, test your soap with Litmus paper or at least test it on the most sensitive area on your body, leave it there while you lather down the rest of yourself before rinsing it off. If it hasn’t irritated you there, it’s a pretty safe bet it won’t irritate your scalp.