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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.
Some sources state that Elizabeth I of England may have used Venetian ceruse. [1]Venetian ceruse or Venetian white, [2] also known as blanc de céruse de Venise [3] and Spirits of Saturn, [4] was a 16th-century cosmetic used as a skin whitener.
Underarm liners were used more commonly before chemical antiperspirants, primarily by women, to preserve fine dresses from soiling. Sweat contains substances that stain yellow or fade dyes. Underarm liners are also known as underarm shields, underarm pads, sweat guards, dress shields, [ 1 ] and pity protectors.
It is a white crystalline powder with a weak sulfurous odor. It can be obtained by reacting sodium bisulfite with zinc. 2 NaHSO 3 + Zn → Na 2 S 2 O 4 + Zn(OH) 2. It is used as such in some industrial dyeing processes to eliminate excess dye, residual oxide, and unintended pigments and for bleaching wood pulp.
Itching powder was created from Mucuna pruriens in the early-19th century as a cure for lost feeling in the epidermis. When a person would lose feeling on their skin in conditions such as paralysis, the powder (mixed with lard to form an ointment) was used as a local stimulant believed to treat the condition. [9] [10]
Laundry detergent fluorescing under ultraviolet light. Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) through the ...