My husband has curly hair, and he wants to straighten them. Earlier he has used many hair gels and mousse to hold his hair and it has actually hardened his hair a lot! At home, I tried olive oil, and even mayonnaise on his hair, but it couldnât help in hair straightening although it did help in making his hair somewhat soft. I want to know if there is a natural hair relaxer, which could straighten his hair now. Please advice!