Beach towel? Check. Sunscreen? Check. High-tech sunburn-monitoring patch? It’s here. As a clinical research scientist at L’Oréal, Megan Manco, Cosmetics and Fragrance Marketing and Management MPS ’16, co-created My UV Patch, a sticker applied to the skin that measures the total UVA and UVB rays coming in, then sends a message to a linked smartphone recommending that the…