After cleansing forehead, then stick it on forehead to assist drawing balance and, When finish drawing, it can be simply peel off Convenient to measure and locate eyebrows. Easily detect the eyebrows up and down position,length,size, convenient and practical Compared with ruler, this sticker is more accurate.Very effective in shaping and measuring brows.Good for accurate measurement and symmetrical marking. Our eyebrow shaper stencils come with an extremely strong adhesive, so it stays put on your forehead while you're marking the shape you want to achieve. The measurements on this sticker are derived from golden mean proportions and should work well on any faces, It can be more accurate for those who are in the beginning stages of the permanent makeup