Shakeel Ahmed, Mehwish Khan Abdali, Filza Hafeez, Haafiza Hina Imtiaz, Rabia Ashfaq, Aisha Malik. Frequency of PPD (Para-Phenylenediamine) Allergy in Hair Dye Users in Faisalabad. Pakistan Journal of Medical & Health Sciences [Internet]. 2022 Aug. 17 [cited 2024 Jul. 17];16(07):203. Available from: https://pjmhsonline.com/index.php/pjmhs/article/view/1950