Once the treatment is complete, Chang applies a soothing cream that contains stem cells and then sunscreen to the patient’s face. She compares the treatment to a chemical peel or a laser in terms of inducing local trauma to boost collagen. To further accelerate the healing process for patients, Chang often uses an LED light. For about 20 minutes post-procedure, patients remain on the treatment table under a tri-paneled lamp. Infrared light is known to accelerate skin recovery and red light is known to reduce inflammation.
Briefly, here's how it works: A doctor will draw blood from you, spin it in a centrifuge to extract the PRP, and then inject or apply it topically. The treatment "is being used to improve skin tone and texture, smooth fine lines, and even promote hair growth," Joshua Zeichner, director of clinical and cosmetic research in dermatology at Mount Sinai Hospital in New York City previously told Allure.

After using injectable fillers to achieve a more youthful appearance, your injector will draw your blood. Typically, we’ll only need to draw around 2 teaspoons. Your blood will be run through a centrifuge to separate and isolate platelet rich plasma, which is also known as growth factors. These specific “growth factors” have been identified to help heal damaged tissue. These growth factors have been known to work like magic to cause increased collagen and improved blood flow to the tissue.
Platelets, Zeichner explains, are rich in growth factors, which essentially act as energy boots for our skin. This helps our skin function optimally, increasing everything from collagen to elastin, while also bringing antioxidant and hydrating properties. "Platelet-rich plasma is now commonly used topically as part of a regular facial, used along with microneedling to enhance penetration into the skin, and is even being injected into the skin in the same manner as dermal fillers," says Zeichner.