Sensitive skin is skin that is easily irritated and causes some degree of discomfort. When there is a change in the external environment, the skin is unable to adjust to it and develops an uncomfortable feeling as well as allergies. Sensitive skin can be divided into three types: dry skin, oily skin, and combination skin. Sensitive skin should be carefully selected for facial care products, and it is best to do a skin test before selection to avoid unnecessary allergies. Characteristics of sensitive skin: 1, thin skin epidermis, fine and fair, sebum secretion is less, drier, microvasculature is obvious, the skin shows reduced dry function, the ability of the stratum corneum to maintain moisture is reduced, the formation of sebaceous film on the surface of the skin is not complete. 2, contact with cosmetics or seasonal allergies easily cause skin allergies, redness, swelling, itching. The skin lacks luster and the cheeks are easily congested and red. 3.The skin is prone to present an unstable state due to seasonal changes. The main symptoms are scratching, burning sensation, tingling, itchy skin and small rashes. 4.It is easily affected by external environment or substances such as cold wind, food, water, ultraviolet rays, synthetic fibers, fragrance, pigments, etc. How to take care of sensitive skin? After becoming sensitive skin, the skin will become very fragile, the slightest change in the outside world may lead to skin allergies, so in the normal care must pay attention to the careful care. How to take care of sensitive skin? 1, keep the skin clean. Spring sand, these dust and the secretion of sebum mixed with the rough skin, it should always keep the skin clean, available mild cleanser and skin softening water, to help sterilize, clean, soft skin. 2, do not arbitrarily change the brand of cosmetics used in the past, because the skin needs to adapt to the new climate, is in a weak ability to resist, adapt to the external environment, change the brand at will, it is easy to appear allergies. 3, always pay attention to the skin’s moisturizing, enhance the skin’s resistance, can choose fresh, hydrophilic skin care products, the original winter use, the skin care products containing more oil should be used as little as possible. 4, pay attention to the impact of sand on the skin, usually more sensitive skin people should pay particular attention to the use of sarongs, masks and other cover-ups when going out, to avoid wind blowing. 5.Eat more fresh fruits and vegetables, and eat less irritating and allergy-prone foods such as seafood and bamboo shoots. 5, when exposed to irritants can trigger skin problems. Allergies to sunlight, climate, water, plants (pollen), cosmetics, perfumes, mosquito bites and high-protein foods can cause allergies.