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Bleaching Kits
The bleach most commonly used is hydrogen peroxide. Hydrogen peroxide can be used alone to lighten dark hair, or together with a coloring agent (a tint).
Strongly bleached hair looks yellowish, because keratin itself is naturally pale yellow. This natural color is the reason why an elderly person's white hair looks slightly yellow at the roots. It also explains why repeatedly bleached hair looks the color of nicotine-stained skin. It needs to be tinted as well as bleached if it is to be turned white or a 'platinum' blond.
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