There are many reasons for dense particles under the eyes, and the common causes are fat grains, contact dermatitis, flat warts and so on. Different treatments are given according to different causes, and the treatments include hot compresses, topical glycerite, and applying antiviral medications. 1. Fat grain is due to the secretion of excessive oil around the eyes can not be discharged normally, resulting in hair follicles clogging the formation of small particles, you can use hot compresses to alleviate the way, hot compresses can effectively promote blood circulation around the eyes, slowing down the growth of fat grains, if the fat grains for a long time can not be eliminated, you can use aseptic needles will be singled out, with the topical erythromycin ointment, and so on. 2. Contact dermatitis is due to skin contact with some stimulating substances, resulting in skin rashes, erythema, etc., which may lead to the appearance of small particles under the eyes, and its treatment can be given to the local affected areas of the boric acid solution wet compresses, but also the use of glycerol for external cleaning. 3. Flat warts are benign epidermal superfluous organisms caused by a kind of milky polyvalent virus, you can choose fluorouracil ointment to smear the surface, but also with the use of antiviral drugs, such as morpholino guanidine hydrochloride and so on. Dense particles under the eyes may have other causes, it is recommended to go to the hospital to identify the cause of the disease, give targeted treatment. The above medication should be used under the guidance of a doctor.