I'm sorry to hear about your experience with the PCL biostimulator. It's important to consult with a medical professional who can evaluate your condition in person and provide tailored advice on how to address the grey area in your DAO area. However, in general, there are several possible treatments that may be able to help improve the appearance of the grey area, depending on the specific nature and severity of the discoloration. These include: Laser treatments: Various types of lasers can be used to target and break down pigmented cells in the skin, promoting their removal and the growth of new, unblemished skin cells. Chemical peels: This involves applying a chemical solution to the skin to remove the top layer of damaged skin cells, revealing newer, healthier skin beneath. Microdermabrasion: A minimally invasive procedure that involves using a special device to gently exfoliate the outermost layer of skin, removing dead skin cells and promoting the growth of new, smoother skin. Topical creams: Certain prescription creams may be able to help reduce the appearance of pigmentation and promote the growth of new, healthy skin cells. It's important to note that the effectiveness of these treatments can vary depending on the individual case, and there may be risks and potential side effects associated with each procedure. It's essential to consult with a qualified medical professional who can evaluate your condition and provide tailored advice on the best course of treatment for you. Best of luck !