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2. Should You Try Natural Hair Dye? Colorists Explain How To Use ...

   www.aol.com/15-expert-approved-hair-dyes...

   But if you've dyed your hair before, there's a chance you've also had some experiences with minor skin—and hair color chemicals such as ammonia and P-phenylenediamine (PPD) could be to blame.

3. 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 ...

4. Hair coloring - Wikipedia

   en.wikipedia.org/wiki/Hair_coloring

   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.

5. Grecian Formula - Wikipedia

   en.wikipedia.org/wiki/Grecian_Formula

   Grecian Formula is a men's hair coloring product from Combe Incorporated. Until 2018 (see below) the formulation used in the United States contained lead(II) acetate . [ 1 ] Because lead acetate was banned in cosmetics in Canada and the European Union, the formulations sold there did not contain it.

6. 13 Reasons for Scabs on Your Scalp and How to Treat Each ...

   www.aol.com/lifestyle/13-reasons-scabs-scalp...

   “The most common culprits are the shampoos, conditioners, hair dyes (especially the ones with paraphenylenediamine–a.k.a. PPD), and styling products,” Dr. Thosani says.

7. How to transform your hair without going to the salon - AOL

   www.aol.com/lifestyle/2016-12-05-how-to...

   Hair care can be expensive, tedious and time consuming but why not try an easy, simple system with natural results that bring out the real you! Hair care can be expensive, tedious and time ...