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3,3′-Diaminobenzidine (DAB) is an organic compound with the formula (C 6 H 3 (NH 2) 2) 2. This derivative of benzidine is a precursor to polybenzimidazole , which forms fibers that are renowned for their chemical and thermal stability. [ 1 ]
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.
Whereas Titian hair is a brownish shade of red hair, auburn hair is specifically defined as including the actual color red. Most definitions of Titian hair describe it as a brownish-orange color, [1] [2] but some describe it as being reddish. [3] This is in reference to red hair itself, not the color red.
Pages for logged out editors learn more. Contributions; Talk; Chestnut hair
A woman with dyed pink hair. Hair coloring, or hair dyeing, is the practice of changing the color of the hair on humans' heads.The main reasons for this are cosmetic: to cover gray or white hair, to alter hair to create a specific look, to change a color to suit preference or to restore the original hair color after it has been discolored by hairdressing processes or sun bleaching.
The Fischer–Saller scale, named after Eugen Fischer and Karl Saller is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations: A (very light blond), B to E (light blond), F to L (), M to O (dark blond), P to T (light brown to brown), U to Y (dark brown to black) and Roman numerals I to IV and V to VI (red-blond).
True white horses have unpigmented skin and hair due to the incomplete migration of melanocytes from the neural crest during development. [8] No health defects are associated with the cream gene. This is also true of the normal variations in skin, hair and eye color encoded on the human SLC45A2 gene. [9]
This is an accepted version of this page This is the latest accepted revision, reviewed on 25 January 2025. Device to vaporize substances for inhalation A vaporization heat wand and vaporization chamber bowl used to deliver vapor through a water pipe A vaporizer or vaporiser, colloquially known as a vape, is a device used to vaporize substances for inhalation. Plant substances can be used ...