5 Proven Reasons Hair Dye Manufacturers Are Obsessed With Henna-Indigo and Amla-Henna Right Now Walk into any natural beauty store in Germany, France, or the Netherlands today. You will notice something. More shelf space is going to henna-based hair color products. Less space is going to chemical dyes. This is not an accident. Buyers across… Continue reading 5 Proven Reasons Hair Dye Manufacturers Are Obsessed With Henna-Indigo and Amla-Henna Right Now