One of the chemicals in hair color that is responsible for allergies is PPD, while our Hypo Allergic Aqua Hair Colour is PPD-free. Also, the allergy-free hair color does not contain harmful chemicals like Ammonia, Hydrogen Peroxide, Heavy Metals, PEGs, Parabens, Resorcinol, or whatsoever. The natural hair color is 100% chemical-free hair color which makes it an ideal hair color for sensitive skin. The Aqua hair color is dermatologically tested, contains no animal parts or extracts, and is not been tested on animals which makes it a cruelty-free and vegan hair color. Out of 8 botanical herbs, Indigo, Henna, Manjistha, and Chamomile work as the primary coloring agents, while Senna Leaf, Amla, Brahmi, and Fenugreek provide healing to the previously damaged hair and scalp. It offers a healthy and bouncy hair texture while covering your grays. The herbal formulation makes it a gentle hair color with a balanced pH between 5 and 7. The skin-friendly hair color is ideal for both men and women and is additionally suitable for first-time users to individuals who have had a nasty experience with chemical hair dyes.