20 purple premium natural semi permanent hair color iroiro iroiro natural premium semi-permanent hair color is the first natural vibrant hair color with natural ingredients. our new, natural-ingredient-based formulation is free of peroxide, ammonia, ppd, alcohol, and toxic and harsh ingredients, thus helping to ensure damage-free extra conditioning results with brilliant color. our colors contain natural certified organic coconut oil for extra conditioning, as well as natural preservatives and natural yuzu-cranberry fragrance. we do not contain following harsh chemicals and synthetic ingredients commonly found in many semi-permanent hair colors today: propylene glycol (petro chemical used in anti-freeze & brake fluids), methylisothiazolinone / methylchloroisothiazolinone (synthetic preservatives named allergen of the year in 2013), pegs (synthetic chemicals classified as a known human carcinogen), methylparaben (synthetic preservative can act as potential hormone disruptors) and more.