... electromagnetic wave with special width-spectrum, selectively acts on target texture, to do skin rejuvenation, freckle ... E-light can penetrate skin deep, selectively act on hypodermal pigment, blood vessel, dissolve freckle, close ... .e.g.: lip hair,Intensive pulse light works on the hair which absorbs the light and transfer ... every 21-28days, 3-6 times every PT.Acne skin1 time every 21-28days, 3-6 ...