OLIVIA HAIR COLOUR MAHOGANY 09 is a Deep Mahogany Brown that will give your hair a natural, wavy look. This intense color can be easily applied by yourself with just a little bit of product and will last for up to eight washes. Olivia Hair Colour Mahogany 09 is free from harsh chemicals and sulfates, so its ideal for dyed or chemically treated hair. Olivia Hair Colour Mahogany is a rich and vibrant brown hair color. It will add depth and life to your hair, making it look thicker and more voluminous. With just two applications, youll see results that will amaze you - your locks will be fuller, crazier, and more voluminous than ever before..