Shakeel Ahmed, Mehwish Khan Abdali, Filza Hafeez, Haafiza Hina Imtiaz, Rabia Ashfaq, Aisha Malik 2022. Frequency of PPD (Para-Phenylenediamine) Allergy in Hair Dye Users in Faisalabad. Pakistan Journal of Medical & Health Sciences. 16, 07 (Aug. 2022), 203. DOI:https://doi.org/10.53350/pjmhs22167203.