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  2. Lawsone - Wikipedia

    en.wikipedia.org/wiki/Lawsone

    Lawsone reacts chemically with the protein keratin in skin and hair via a Michael addition reaction, resulting in a strong permanent stain that lasts until the skin or hair is shed. Darker colored staining is due to more lawsone–keratin interactions occurring, which evidently break down as the concentration of lawsone decreases and the tattoo ...

  3. Skin whitening - Wikipedia

    en.wikipedia.org/wiki/Skin_whitening

    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 ...

  4. Common dye turns skin invisible to see the organs inside - AOL

    www.aol.com/news/common-dye-turns-skin-invisible...

    Any that dye that is in the skin will simply be taken in and then excreted as urine. The dye itself is safe for living organisms – which is good, since it is currently used in candy, snack chips ...

  5. Dye in Doritos used in experiment that, like a 'magic trick ...

    www.aol.com/news/dye-doritos-used-experiment...

    That's because human skin is about 10 times thicker than a mouse and it's not sure how much of the dye – or how it would be administered – is needed to work in humans, Ou said.

  6. Haematoxylin - Wikipedia

    en.wikipedia.org/wiki/Haematoxylin

    [8] [9] The dye was first introduced to Europe by the Spanish, and soon after was widely adopted. [ 9 ] [ 8 ] Haematoxylin was used to produce blacks, blues and purples on various textiles, and remained an important industrial dye until the introduction of suitable replacements in the form of synthetic dyes . [ 9 ]

  7. We found the 50 best Christmas gifts for women in 2024 - AOL

    www.aol.com/lifestyle/best-christmas-gifts-women...

    It's easy to use — simply spit in a tube and mail it to the company — and produces thorough results that are constantly updating as the brand collects more information. $39 at Amazon Amazon

  8. Brilliant green (dye) - Wikipedia

    en.wikipedia.org/wiki/Brilliant_Green_(dye)

    Zelyonka. Brilliant green has been used to color silk and wool.. It is indicated for disinfection of fresh postoperative and post-traumatic scars, umbilical cord of newborns, abrasions, cuts, and other violations of the integrity of the skin, in the treatment of purulent-inflammatory processes of the skin - hordeolum ("barley"), meibomite, blepharitis, pyoderma, local furunculosis ...

  9. Tattoo ink - Wikipedia

    en.wikipedia.org/wiki/Tattoo_ink

    Mehndi body art involves applying henna dye externally to create a temporary tattoo on the surface of the skin, typically producing a brown color that fades in a few weeks. Health Canada and the US FDA have advised against the use of "black henna" pigment that contains para-phenylenediamine (PPD), an ingredient in hair dyes.