A Compact Optical Sensor to Self?Assess Skin Health after Sun Exposure - Cheong, Ying Zhi; Yang, Mingjie; Dhanabalan, Shanmuga Sundar; Elango, Peter Francis Mathew; Sriram, Sharath; del del Rosal, Blanca; Bhaskaran, Madhu (Advanced Sensor Research, 2025)