Andre Walker, Oprah Winfrey’s hair stylist, developed a curl chart in the 90’s to describe different hair types.  At the time, he was developing a shampoo line.  Four categories for hair texture were formulated, with sub-categories as appropriate.   

Straight (1A-C), Wavy (2A-C), Curly (3A-C) and Kinky/Coily (4A-C). 

It is not uncommon to find some people can have several different curl patterns on their scalp.  These patterns can change in density and/or thickness over time.  Hormones, diet and hydration also play a major role in our curl’s liveliness.  Sometimes pregnancy and menopause can alter hair texture.  Believe it or not, so does taking artificial hormones such as birth control.