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One of the cosmetic products that mankind has been using since ancient times is nail polish. Nail polish is widely used for manicure and pedicure, both for decorative and therapeutic purposes. Decorative nail polish consists of a polymer (most often nitrocellulose [1]), solvents, plasticizers and pigments. However, at present, the most common is a gel polish, in which the curing of the nail polish occurs under the influence of ultraviolet radiation. It is the pigments that give the nail polish its color. Cosmetic pigments of gel nail polish can be both natural and synthetic. The most common mineral pigments are materials of a salt and oxide nature, for example, cobalt-chromium oxide pigments [2] as well as spinel [3–5] and pigments with the structure of various silicates [6, 7]. Inorganic pigments are characterized by high color stability but at the same time, they have a limited range of colors. In turn, organic pigments have a wide range of colors but are characterized by low light stability. Materials of organic-inorganic nature combine the advantages of both organic and inorganic pigments. Among the pigments of this type, the most promising are layered double hydroxides (LDH) [8] intercalated with dye anions [9, 10]. The combination of various metal cations and anionic dyes of various colors in the composition of LDH will significantly expand the color palette of cosmetic pigments. For example, Zn-Al and Acid Yellow 17 [11], Mg-Al and o-Methylene Red [12], Ni-Fe and o-Methylene Red [13], Zn-Al and Mordant Yellow 3 [14, 15], Zn-Al and Acid Yellow 3 [16], Zn-Al and Acid Green 28 bianion [17]. It should be noted that cosmetic pigments should have minimal toxicity. Therefore, the synthesis of cosmetic pigments based on LDH intercalated with food dyes of various colors is relevant. Received date 05.09.2020

Determination of the applicability of Zn­Al layered double hydroxide, intercalated by food dye Orange Yellow S, as a cosmetic pigment

Determination of the applicability of ZnAl layered double hydroxide, intercalated by food dye Orange Yellow S, as a cosmetic pigment