Cutera Coolglide Laser Good for Hair Removal on Dark Skin?

is Cutera Coolglide Laser treatments' result on dark skin for longterm? I have gone through 6 laser(alexandrine) treatments on my face, i didn't get result. Even i noticed that the hair on my face grown thicker and darker. After a lot of research on google i found ND-Yag is the best for darker skin. But i'm confused again. will it help me to remove hair from my face.

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