After 3 years and some change of being natural, I relaxed my hair, after 3 more years I transitioned back to natural. My regimen is pretty much the same. I wash my hair once or twice a week. Throw some moisturizer on it daily and wear a hair style that keeps my ends tucked under.

There is no magic product or regimen that will grow your hair. Your hair is going to grow out of your scalp regardless. Your job is to protect the ends of your hair so that they don't break off. The biggest hurdle for growing type 4 hair is finding a style that is both cute AND protects the ends of your hair.