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Colonial-era casta painting from 1799, according to which the offspring of a Spaniard and a castiza are deemed to be "Spanish", i.e., White Latin Americans ().. Peter Wade argues that blanqueamiento is a historical process that can be linked to nationalism.
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 ...
The tooth whitening endpoint does depend on the frequency of use and ingredients of the product. [1] Whitening gels are applied onto the tooth surface with a small brush. [1] The gels contain peroxide and are recommended to be applied twice a day for 14 days. [1] The tooth whitening endpoint like that of the whitening strips. [1]
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 ...
The term "bleach" originates from a French word signifying "to whiten." In essence, the process of bleaching involves whitening by removing substances that impart color to the material undergoing the bleaching treatment. [26] Bleaching is the process of decolorizing the material after it has been scoured.
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Panel of the Battle of Aljubarrota by Portuguese artist Jorge Colaço, 1922. Azulejo (Portuguese: [ɐzuˈle(j)ʒu, ɐzuˈlɐjʒu], Spanish:; from the Arabic الزليج, al-zillīj) [1] [2] is a form of Portuguese and Spanish painted tin-glazed ceramic tilework.
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