Type 4 hair has fewer cuticle layers than any other hair texture, thus it has less natural protection from damage caused by excessive heat styling, too-tight styles and dryness. The key to maintaining healthy type 4 hair is moisture, moisture, and more moisture! Type 4 hair has been known to “drink” up moisturizer and responds well to sealing in moisture with oils, such as coconut and jojoba, and shea butter.