The combination that requires a different protocol at every layer.
The patient in this video has Fitzpatrick type four skin and deep acne scars. That is exactly why Dr. Emer built this multi-layered approach: micro droplet silicone to fill the deepest depressions, Profractional laser to remodel tissue underneath, and Contour TRL to resurface the top layer.
Each modality works at a different depth, and each one has to be calibrated for melanated skin. The Profractional goes deeper into the tissue in millimeters, remodeling the layers beneath the surface. That step is bloody, because the laser is penetrating through multiple layers. The final layer is Contour TRL, a superficial erbium laser that resurfaces the top of the skin.
By the time the Contour TRL step happens, the blood from the Profractional has to be wiped completely dry, because any fluid left on the skin absorbs and disperses the laser energy unpredictably. Every millisecond of energy delivery matters on darker skin.