Deka Synchro Replay Hair Removal Excellent for darker skin tones and tanned skin that other laser hair removal lasers cannot treat. This is because most other lasers need a high contrast between the skin tone and the hair color. That makes it easy for the laser to differentiate and deliver its energy into the hair shaft, rather than the surrounding skin. The Synchro REPLA:Y has 12 different handpieces that allow us to deliver the safest, most effective laser hair removal without worrying about damaging the surrounding skin.