... Absorbed largely by skin pigment for light energy, it's susceptible to injury for high energy or dark skin ... hyperplasia, rearrange, achieving the purpose of firming, wrinkle.Rf (radio frequency) energy absorption is not influenced by melanin, proved ... low energy pulsed light. Treatment diagram Application ( 1 ): Pigmentation removal, such as freckles, sunburn spots, age spots, chloasma, melasma, ...