True Colours: Hair Colouring for the Curious and the Cautious by Milly Ahlquist & Mark Constantine

Hair dyers of the modern age, whether you henna, highlight or permanently dye, whether it's over the sink or in the salon, this book is for you.

Come rifle through the history and science of hair dye, both synthetic and herbal, from its origins in the ancient world to the health scandals of the 20th century. Learn why human evolution determines your natural hair colour, how dyes of different strengths alter it, and what effect colourants could have on your health. An honest and intriguing look at what hair dye is, what it does, and the power it holds over us. Includes the story of henna hair colour within Lush, with practical tips for henna application from trichologist Mark Constantine.

Reworked and updated from Lush co-founder Mark Constantine's original Herbal Hair Colouring, first published in 1978.