For those who suffer from rashes caused by hair color (diamine dyes) It is a non-oxidative hair dye that dyes hair not through an oxidative reaction between oxidative dyes (diamine, etc.) and oxidants (hydrogen peroxide), but through a compound produced by a chemical reaction between natural vegetable dyes (polyphenols, etc.) and iron salts. Since it contains no diamine dyes, there is no risk of allergic dermatitis caused by diamine dyes. Recommended for Experienced a rash from ordinary gray hair dyes. Have used hair nail polish but are dissatisfied with the results. Have never used hair dye for fear of getting a rash. There are two main symptoms of rashes. Temporary Irritant" Transient dermatitis (leeches, figs, caterpillars...) Allergic" Dermatitis that occurs every time you come in contact with a quality (hay fever, buckwheat allergy...) Allergic dermatitis "cosmetic dermatitis (cosmetic rash)" occurs with hair color. Among coloring agents, "oxidative hair dye (hair dye/hair color)," which is generally referred to as gray hair dye or fashionable hair dye, fixes color firmly in the hair and makes the color last longer, but in rare cases, it may cause a rash in some people. This is due to an allergic reaction caused by oxidative dyes (diamine dyes), the main ingredient in oxidative hair dye. As with other allergic reactions such as hay fever or drug allergies, once a person gets a rash from oxidative hair dye, antibodies are formed in the body, and if hair color is used again, a more severe allergic reaction will occur. Even people who have never had a rash before may suddenly develop a rash at some point. Principle of hair dye Maron Mind Color is "Ohaguro Style Hair Color" When boiling black beans or making eggplant pickles, nails are added to improve the color and luster of the finished product. This effectively utilizes the reaction between the polyphenols contained in beans and eggplant and iron salts. Maron Mind Color, a non-oxidative hair dye, dyes hair based on a principle similar to these. - The compound formed by the reaction of polyphenols, etc. contained in the first agent and iron salts contained in the second agent becomes a dye and dyes the hair. (1) First, apply the first agent to swell the cuticle. (2) Polyphenols enter the hair. (3) Further application of the second agent causes the polyphenols to react with the iron salts, resulting in black coloration. (4) The cuticle shrinks and the pigment is deposited. Difference from ordinary hair coloring <Characteristics - Can be used by people who easily get rashes from oxidative hair dye - Color lasts about 1 month - Dyeing operation is a little troublesome - Difficult to perm - No bleaching effect <Normal hair color features - Dye well in a single pass - Color lasts about 2 to 3 months - May cause rash in some people - Slightly 🌸 This product is shipped directly from Japan Delivery takes 7-14 days from shipping date.