Development and Assessment of a Salicylic Acid Serum for Facial Skin: Impact on Skin Health and Efficacy - Naji, Mohammed Jafar; Ali, Khaled Abdulrahman; Ahmed, Mousa Ali; Mohammed, Abdullah Ahmed; Hazza, Iyad Ahmed; Bijash, Mustafa Taha; Ali, Khaled Ahmed (University of Science and Technology, Sana’a, 2025)