Dr. Ostertag is a dermatologist specializing in cutaneous oncology and surgery at the Catherina Hospital in Eindhoven, Netherlands. Like all other members of the expertise it has the concept of guest orientation in high esteem. Also for laser treatment it has great expertise, particularly in the medical field but also cosmetic. Dr.. Ostertag is closely involved in the drafting of the national guidelines for laser treatments. She is also chairman of the committee dermatosurgery and lasers, medical advisor for the Nevus Network Netherlands and Chairman of the domain group technical skills. In 2006 she obtained her PhD. The title of her thesis is: Laser resurfacing in the treatment of potential malignant skin diseases.Just optical improvement?