A natural curved line at the base of the eyelashes is called “eyeliner”. Tattoo eyeliner to extend the direction of growth of the root of the eyelashes, not beyond the root of the eyelashes, tattooed with a thin eyeliner, not only can change the shape of the eyes, but also add the shape of the eyes, the appearance of beauty. But tattooing eyeliner may also produce the following hazards: 1, if the use of eyebrow tattooing apparatus in more than one person, cross use, may also cause cross-infection of viruses, infected with hepatitis B, hepatitis C and other infectious diseases; 2, if tattooing eyeliner when the electric tattooing machine speed, tattooing sharp needles, a little inattention, it is very easy to accidentally injure the eye, affecting the normal function of the eyes; 3, tattooing the eyeliner in the process of the injection of the eye tissues of the dye. Deposited in the blepharoplasty or its surrounding, it will cause chronic inflammation of the blepharoplasty, affecting the blepharoplasty exudation, triggering dry eye; 4, surgical instruments or colorants in the absence of strict disinfection, it is easy to cause eye infections, pain, photophobia, tearing, pigment particles on the eyelids, and in serious cases, even keratitis, conjunctivitis and ophthalmitis. Therefore, eyeliner tattoo is a medical cosmetic project, without the consent of the relevant departments, beauty salons are not allowed to carry out without authorization, you need to go to a regular medical institution, operated by a professional physician, and you need to follow the doctor’s instructions to carry out the correct care, in order to protect the safety and effect.