Because tattoos are as deep as dermal nipples, they are not easy to wash off or modify. Because to completely remove the pigment from the tattoo, it is bound to leave scars. At present, the commonly used eyebrow washing method is mainly chemical etching. Use a tattoo needle to densely pattern the parts that need to be modified to form dense punctate bleeding wounds, and then apply eyebrow washing liquid on them, so that the locally chemically corroded skin will turn white, scab and fade. However, this eyebrow washing method through chemical burns has a very poor effect. If you apply too little, the fading will not be complete. Too much paint can easily destroy the dermis and leave permanent scars, resulting in no eyebrows, especially those with deep eyebrows. Because of the dense nerves and blood vessels around the orbit, the bad stimulation of eyebrow tattooing or eyebrow washing may also affect vision or lead to eye muscle motor dysfunction, and even temporary or permanent blindness. In addition, often trimming and plucking eyebrows at will may cause eyebrows to suddenly fall off, or may lead to no eyebrows, which may affect the normal physiological functions of eyebrows and eyes, and may easily lead to hair follicle infection and even induce serious diseases, such as intracranial infection caused by the spread of infection.