1 citations,
July 2016 in “Cosmetics” Black henna tattoos can cause severe allergies to hair and textile dyes, and there's a need for greater public awareness and regulation.
21 citations,
January 1995 in “Journal of the American Institute for Conservation” A new method extracts red dyes from wool without damaging it, although it slightly weakens the wool.
17 citations,
April 2002 in “Contact Dermatitis” Minoxidil 5% caused skin discoloration in a man using it for hair loss.
13 citations,
January 1995 in “Journal of the American Institute for Conservation” Researchers developed a less damaging way to extract red dyes from wool using EDTA and DMF, preserving the fiber's strength for further analysis.
63 citations,
February 2017 in “ACS biomaterials science & engineering” Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.