research Light‐based home‐use devices for hair removal: Why do they work and how effective they are? 15 citations , January 2019 in “Lasers in surgery and medicine” Home-use light devices can significantly reduce hair but are less effective on very dark skin and slower than professional devices.
research Microneedling and Oral Replacement of Collagen as Strategies for Skin Rejuvenation January 2019 in “Archives of dermatology and skin care” Microneedling with oral collagen improves wrinkles better than microneedling alone.