Scalp can scrape out white grease, do not exclude the symptoms of fungal infection of the skin on the scalp or the appearance of seborrheic dermatitis. Mainly: a. If the skin on the scalp is not cleaned properly, some fungi may multiply on the scalp, causing excessive hyperplasia of the scalp keratin layer, it will form white keratinized material, which will fall off when scraped by hand, in ordinary life must pay more attention to the cleaning of the hair, in addition to cleaning the hair with shampoo, but also proper cleaning of the scalp, avoiding the use of stimulating too much shampoo. Second, some clinical people’s hair is oily, the scalp’s oil gland secretion is also more vigorous, easy to produce greasy scales, thus triggering seborrheic dermatitis, you can choose to use antibacterial drugs to relieve. In addition to good personal hygiene and cleanliness, you should also pay more attention to the regulation of diet, do not eat too much greasy food.