Dr. Noreen Galaria.Edgar ArtigaDr. Noreen Galaria, 49, is a dermatologist who offers filler treatments to clients to plump up skin.Galaria has never gotten filler herself, citing concerns about gradually overdoing it.Instead, she uses sunscreen, retinoids, antioxidants, and exercise to boost her skin's collagen.Filler injections are increasingly popular, with over 3.4 million treatments performed in the US in 2023.