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An elderly Bengali man in Dhaka with a beard dyed in henna. Henna is a reddish dye prepared from the dried and powdered leaves of the henna tree. [1] It has been used since at least the ancient Egyptian period as a hair and body dye, notably in the temporary body art of mehndi (or "henna tattoo") resulting from the staining of the skin using dyes from the henna plant.
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 ...
Rich brown is the most popular henna color, which is produced using a natural dye made from the Lawsonia inermis plant. But modern patterns now incorporate hues like white, red, black, and gold, enabling more individualized and varied artistic expressions. In South Asia, mehndi is applied on the body during both Hindu and Muslim weddings. [2]
This versatile dye has varying effects: a yellowish stain on nails, hands, and feet, a vibrant red hue on hair, and a muted red dye for fabrics. Henna’s adaptability has made it a staple for ...
The Home Depot offers a similar match-plus-10-percent policy. Both retailers have exclusions to these price-matching guarantees, so it's important to read the fine print in the links above. 4.
Thermochromic polish: When exposed to hot or cold temperatures, nail polish changes color. [3] Matte effect: These nail polishes can transform a layer of glossy nail polish into a flat matte finish. [36] Inverse French: Also called a "half-moon." The half-moon is created on the root nail's root in one color while the other is painted ...
p-Phenylenediamine (PPD) is an organic compound with the formula C 6 H 4 (NH 2) 2.This derivative of aniline is a white solid, but samples can darken due to air oxidation. [1] It is mainly used as a component of engineering polymers and composites like kevlar.
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