Dyeing your hair is one of the easiest ways to change up your appearance. It’s quick and low maintenance, but the science behind it is actually very interesting. 1 The Structure of Hair 2 Different Types of Hair Dye 3 Permanent and Demi-Permanent Hair Dyes 4 Temporary/semi-permanent dye The Structure of Hair To understand what happens, first we need know … Continue reading How Do Different Types of Hair Dye Work? The Science