Herbatint Permanent Colour - 5C Light Ash ChestnutHerbatint is easy to mix and apply and is fragrance free. If you have used a henna based dye in the past few months, please note that using chemical dyes over hair colored with pure plant dyes can give unexpected results, which are usually much darker color than would normally be expected, because plant dyes don't lift as easily. Chemical dyes may also fade faster than usual because henna makes your hair smoother and less porous so the chemical dyes