The lower the laser grading, the less dangerous the laser output is in terms of optical or skin damage. As with all lasers, regardless of the rating, all safety precautions must be followed. Helium ...

Dr Rinky Kapoor elaborated, “The commonly used pigments are iron oxide for black, camel yellow, light and dark brown skin color, titanium oxide for white, cadmium sulfide for yellow, and cinnabar or ...