Red eyes after receiving eyelashes may be the existence of an allergic reaction, may also be caused by conjunctivitis. 1. Allergic reaction: after the docking of the eyelash extensions, if there is an allergic reaction to the glue, it will make the eyes red, and now there are symptoms such as itching and tearing, and then after diagnosis, antihistamines should be used to treat, such as loratadine tablets, levocetirizine hydrochloride tablets, and so on. 2. Conjunctivitis: when eyelash extensions, the solution touches the eyeball, may cause conjunctivitis will lead to eye redness, may also be accompanied by eye congestion, itchy eyes and other symptoms, and may be infected, after the diagnosis of the application of of ofloxacin eye drops, lomefloxacin hydrochloride eye drops and other medications for treatment. During the treatment, it is important to follow the doctor’s instructions, safe and reasonable use of drugs, do not self-medication to avoid adverse effects.