Hypo-allergenic products for fine hair

Hi, I have very fine hair (and not a lot). I was using Nexxus Diametress and their leave-in conditioner for fine hair and it was working GREAT. However, my partner is allergic to it. He is allergic to anything with fragrance and chemicals (but we don't know exactly which ones). So, I am looking for products for fine hair, that will add volume to my hair, without fragrance (preferably, or if not without a lot of fragrance) and without artificial chemicals. I am especially looking for a good shampoo, conditioner (or leave-in conditioner that will not weigh my hair down) and styling products (soft gel).Thanks a lot!Ilse