Patent Blue V, also known as CI 42051, Acid Blue 3, Food Blue 5, and Food colorant: E 131, is a synthetic blue dye used as a colorant in cosmetics, skin, nails, and hair. It is a triphenylmethane dye. It is banned or found unsafe for use in cosmetics according to CosIng. It is also used in facial toning lotion to control excess sebaceous secretion and restore the skin’s pH.
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Combination and/or oily acne-prone skin
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People allergic to or reactive to any of the active ingredients or components of the product. Avoid using on sensitive areas around the eyes and lips. The skin in these areas has different needs. Avoid direct contact with eyes.
Synthetic
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Patent Blue V is a triphenylmethane dye. It is classed chemically as a triphenylmethane color. It is not currently on EWG's Skin Deep Restricted or Unacceptable Lists. It is banned or found unsafe for use in cosmetics according to CosIng. In China, Patent Blue V is included in the List of Colorants Permitted for use in Cosmetic products. However, it is not allowed for use in hair dye products.
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