research In Vivo and In Vitro Evaluation of PTeCA (1H‐Pyrrole‐2,3,4,5‐Tetracarboxylic Acid) in Hair Matrix as a Marker for Oxidative Cosmetic Treatment March 2026 in “Drug Testing and Analysis” PTeCA is a reliable marker for detecting oxidative hair treatments.
research Pili trianguli et canaliculi as a phenotypic subtype in patients with central centrifugal cicatricial alopecia: A scanning electron microscopy study 2 citations , May 2020 in “Journal of the American Academy of Dermatology” Hair shaft changes may be linked to CCCA, but their role is unclear.