Hi Baldrich...... it works fine if there`s some [even very thin] hair there...it ` sells` the illusion of thicker hair.....I got it done at the nape area before my own hair grew down /integrated with it ..... I posted these pics. so people can ``see`` what I got done ...... I`ll attach photos of the effect this process has when used on eyebrows ...I copied /pasted them from the website of the salon I used .... she`s very good / skilled ..apparently this is used commonly in China ..... the fact that it`s not tattooing is great as tattooing is more like ` dots` and is ` heavier` and permanent.... she uses a little blade with a hooked tip on it ..she dips it into the jar of pigment and then ` scratches` the skin with it .... the little lines appear / give the impression that they are hairs, when in fact it`s a line of pigment..... I found it great on the sideburn areas ... I have hair at my temple -points but it`s a shade of white /grey ...she said rather than pigment the skin in that area, I`d be just as well to add a little color to the hair itself .....but certainly there`s no reason why pigmentation could not ` strengthen ` the appearance of ` weak` temple points ......