Fotona 4D is a non-invasive laser treatment of both the exterior facial and interior oral cavity, enabling full-thickness contraction of collagen for persistent, no-downtime tightening and volumization, without injectables. With two laser wavelengths (Er:YAG and Nd:Yag) and four treatment modes (3D excludes the last step, the light peel), anti aging is synergistically approached from 4 different levels, working on deeper, medical and superficial connective structures of the skin as well as targeting imperfections.