Part of the relief she might be feeling is just using the M&P. I used to use really lovely handmade CP soaps, but then I got an auto immune illness. Since then even the most chemical laden MP soaps work better than CP. That being said I tried a lot of soaps before settling on the SFIC bases. The shaving soap is more than OK for me but my skin is happiest with the organic. You might want to mention to her that huge bubbles are fun, but not necessary to become clean. I've also sold to folks with psoriasis and eczema. Those folks tended to like the SFIC base with just the activated charcoal. I don't scent any of the soaps. I did play a little with ground calendula and a clay– I don't remember which one. Those experiments were going well, but I got distracted by life. I think really all folks can do is just play with different things to see what works for them. I would also from personal experience avoid the white M&P.
Part of what you are selling with soap is the experience of using it. Let me tell you if someone can use your soap without pain than that is a good experience! However, an attractive mold and MP with activated charcoal can be a really pretty soap. I sell only unscented and there is a market for it. I do color with oxides and while anyone can be allergic to anything (me most of all) I'm not hearing that anyone is reacting.
