Your Nature's Gate shampoo will work fine. Cocamidopropyl Hydroxysultaine is a cousin of Cocamidopropyl Betaine which is an amphoteric surfactant (ie, gentle but cleans well).
No worries. As long as you condition more than you shampoo (in your general hair care practices), your hair will be fine.
4a/3c, fine strands, low porosity, medium density
Last relaxer: Jan 2010 - BC'd: 2/27/11