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Kojic acid is an organic compound with the formula HOCH 2 C 5 H 2 O 2 OH. It is a derivative of 4-pyrone that functions in nature as a chelation agent produced by several species of fungi, especially Aspergillus oryzae , which has the Japanese common name koji .
The most popular beauty products often contain sake and rice bran, which contain kojic acid. The Ministry of Health, Labour and Welfare has approved a specific combination of active ingredients for skin whitening cosmetics used by the general Japanese public. These are mainly arbutin and kojic acid. [4]
Dermatologists discuss the benefits of kojic acid for skin, including how the ingredients helps brighten skin, reduces dark spots and discoloration, and more.
Skin whitening, also known as skin lightening and skin bleaching, is the practice of using chemical substances in an attempt to lighten the skin or provide an even skin color by reducing the melanin concentration in the skin.
The combination of kojic acid, 10% glycolic acid and tranexamic acid “act synergistically for brightening skin overall and lightening dark spots,” says Castilla, who notes that it’s a ...
2. Clairol Age Defy Permanent Hair Dye. Best for Grays. For those with especially stubborn grays, this permanent color is a fan favorite for full coverage that lasts up to eight weeks.
The Fischer–Saller scale, named after Eugen Fischer and Karl Saller is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations: A (very light blond), B to E (light blond), F to L (), M to O (dark blond), P to T (light brown to brown), U to Y (dark brown to black) and Roman numerals I to IV and V to VI (red-blond).
raven black; Naturally, hair reflects light, which is why even black hair does not appear fully dark in the light. However, the darkest shade of black hair, raven-black, does not behave as other hair would in the light. The name of the color comes from a raven’s wing due to similarities in behavior.