research Formulation And Evaluation Of Herbal Hair Dye Using Platycladus Orientalis For Preventing Hair Loss” January 2024 The herbal hair dye using Platycladus orientalis effectively prevents hair loss, covers gray, and is gentle and safe for all ages.
research Fiber-Safe Extraction of Red Mordant Dyes from Hair Fibers 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.