She is wrong in that, as the pros here say all of the time, with good vision equipment and skill those vellus hairs can be treated successfully.
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Treatment details: genetic male heavy facial/body hair no hrt, type III skin
Pro Electro: 79.00 hours Apilus Platinum picoflash + synchro
DIY/Co-DIY Electro: 498.75/54.00 hours Apilus SM-500 microflash + blend