Researchers found a surprise in DNA from Beethoven’s 200-year-old hair
A study published in 2023 highlights significant discoveries that were only made possible through DNA analysis of Beethoven’s hair.
Medscape3d
Alternative Hair-dye Products for Persons Allergic to Para-phenylenediamine
Objective: We examined whether individuals allergic to PPD will tolerate PPD-free hair dyes containing PTDS. Methods: A retrospective analysis of patch-test results since October 2006 was done and ...