Anticorrosive

Anticorrosive components are added to cosmetics not for skin or hair care directly, but primarily to protect the formula and packaging from corrosion. They help to reduce the destruction of metal parts, such as valves, springs, lids, and the inner coating of containers, if the product comes into contact with water, salts, acids, or alkalis. As a result, the product remains stable for longer, and the risk of metal traces entering the formula, which can impair the color, odor and overall durability of the product, becomes lower. The European CosIng database classifies anticorrosive among the cosmetic functions of ingredients, and industry reference books also associate such substances with protecting packaging and composition from unwanted chemical reactions. (ec.europa.eu )

For consumers, this means a more predictable texture and quality of the product over the shelf life: the emulsion changes color less often, the aerosol packaging works more stable, and the formula suffers less from metal impurities that can accelerate oxidation. Such substances usually affect the skin and hair indirectly — through maintaining the purity and stability of the product, rather than through an independent pronounced care effect. This feature is especially useful in sprays, foams, shaving products, deodorants, and other products with metal packaging elements. (cosmadex.eu)

Typical examples are sodium—Sodium Benzoate, which is claimed in the European inventory of cosmetic ingredients, among other things, as anticorrosive, and some complexing components, such as EDTA salts, which bind metal ions and thereby help reduce their undesirable participation in reactions within the formula. Although EDTA is more often described as a chelator, its action also helps maintain product stability and reduce problems associated with metal impurities. (cosmadex.eu)