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

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

   In standard hair dyes, ammonia can ... Many brunettes tend to develop dermatitis on the scalp from using dark dyes because they contain PPD (paraphenylenediamine), which is harsher on people's ...

3. The 6 Best Natural Hair Dyes for Healthier Strands - AOL

   www.aol.com/lifestyle/6-best-natural-hair-dyes...

   Boasting healthier and gentler formulas, these clean hair dyes achieve their rich color payoff and gray-concealing abilities from naturally derived botanicals and pigments instead of known ...

4. The 11 Best Hair Dyes for Dark Hair Without Bleach - AOL

   www.aol.com/11-best-hair-dyes-dark-190000812.html

   Luckily, blondes aren't the only ones who can have fun with hair color. Believe it or not, dar. PureWow Editors select every item that appears on this page,, and the company may earn compensation ...

5. 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 ...

6. 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.

7. Farouk Shami - Wikipedia

   en.wikipedia.org/wiki/Farouk_Shami

   He invented the first ammonia- free hair color, after developing an allergy to the chemical that initially led doctors to encourage him to leave his profession. [ 2 ] His company, the Houston-based Farouk Systems, currently employs 600+ people in the US, and exports its line of hair and skin care products under the BioSilk, SunGlitz and ...