... effect. ROYAL-PDT300 has advantage of deep stimulating organization and fewer treatments comparing with the erbium laser (2940nm). ... Characteristics 1. Shorter treatment time, less pain, no pigmentation and no pigment loss, no additional consumables. 2. Proliferating collagen ... 1. Eliminating small wrinkles, scars, reducing head wrinkles and improving the phenomenon of large pores, thickened dermis; 2 ...