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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. Several chemicals have been shown to be effective in skin whitening, while some have proven to be toxic or have ...
Molecular models of the different molecules active in Piranha solution: peroxysulfuric acid (H 2 SO 5) and hydrogen peroxide (H 2 O 2). Piranha solution, also known as piranha etch, is a mixture of sulfuric acid (H 2 SO 4) and hydrogen peroxide (H 2 O 2).
While many home remedies exist to attempt to remove the stains from skin, there are many products distributed in traditional drugstore or discount channels for this purpose. The home remedies vary in effectiveness and carry the risk of skin irritation and abrasion as a result of excessive scrubbing, plus eye irritation if allowed to drip or run ...
Loose face powder in three different shades. Face powder is a cosmetic product applied to the face to serve different functions, typically to beautify the face. Originating from ancient Egypt, [citation needed] face powder has had different social uses across cultures and in modern times, it is typically used to set makeup, brighten the skin and contour the face.
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 February 2025. "Skin pigmentation" redirects here. For animal skin pigmentation, see Biological pigment. Extended Coloured family from South Africa showing some spectrum of human skin coloration Human skin color ranges from the darkest brown to the lightest hues. Differences in skin color among ...
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Thioglycolic acid with a pK a of 3.83 [7] is an acid about 8.5 times stronger than acetic acid (pK a 4.76): . HSCH 2 CO 2 H → HSCH 2 CO 2 − + H +. The second ionization has a pK a of 9.3:
Tattoo removal is the process of removing an unwanted tattoo. The process of tattooing generally creates permanent markings in the skin, but people have attempted many methods to try to hide or destroy tattoos. The standard modern method is the non-invasive removal of tattoo pigment using Q-switched lasers. [1]