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  2. p-Phenylenediamine - Wikipedia

    en.wikipedia.org/wiki/P-Phenylenediamine

    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. It is also an ingredient in hair dyes and is occasionally used as a substitute for ...

  3. 12 Best Vitamins for Hair Growth - AOL

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    3. Folic Acid. Folic acid is a synthetic form of folate, a B vitamin found naturally in many foods. If you eat lots of dark leafy greens (like broccoli, spinach and asparagus), beans, nuts, seeds ...

  4. m-Phenylenediamine - Wikipedia

    en.wikipedia.org/wiki/M-Phenylenediamine

    m-Phenylenediamine, also called 1,3-diaminobenzene, is an organic compound with the formula C 6 H 4 (NH 2) 2. It is an isomer of o -phenylenediamine and p -phenylenediamine . This aromatic diamine is a colourless solid that appears as needles, but turns red or purple on exposure to air due to formation of oxidation products. [ 3 ]

  5. Polyamide - Wikipedia

    en.wikipedia.org/wiki/Polyamide

    The resulting polyamides are known as proteins or polypeptides. In the diagram below, consider the amino-acids as single aliphatic monomers reacting with identical molecules to form a polyamide, focusing on solely the amine and acid groups. Ignore the substituent R groups – under the assumption the difference between the R groups are negligible:

  6. Millions Of People Take Biotin For Hair Growth, And Many Are ...

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    Changes in hair: You may start to notice thinning, hair loss, brittleness, or dryness. Changes in skin : This often looks like noticeable dryness, flaky, or scaly skin, especially around the eyes ...

  7. Can using everyday hair care products be harmful to ... - AOL

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    How often these products are used, how much time a person’s hair care routine takes, the temperature of styling tools, hair length, bathroom size and type of ventilation system are all factors ...

  8. N-Isopropyl-N'-phenyl-1,4-phenylenediamine - Wikipedia

    en.wikipedia.org/wiki/N-Isopropyl-N'-phenyl-1,4...

    N-Isopropyl-N′-phenyl-1,4-phenylenediamine (often abbreviated IPPD) is an organic compound commonly used as an antiozonant in rubbers. [1] Like other p-phenylenediamine -based antiozonants it works by virtue of its low ionization energy , which allows it to react with ozone faster than ozone will react with rubber. [ 2 ]

  9. Chemical hair straighteners linked to higher risk of uterine ...

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