What precautions should I take when I dye my own hair?

Use less toxic dyes. Few people (including doctors) realize how toxic most hair dyes are.Hair dyes can cause asthma & allergic reactions and are associated with increased risk of certain cancers (like non-hodgkin's lymphoma) & primary biliary cirrhosis, a lethal condition. However, not all dyes are equally toxic- there are safe alternatives like henna.See www.Squidoo.Com/hairdyedangers which discusses less toxic dyes.