Is your skin susceptible to allergies? What is skin allergies? How to avoid skin allergies? Today, Jiang Wei, deputy director of the Department of Dermatology, Peking University Third Hospital, was invited to interpret “skin allergy†for us.
Q1: What is skin allergies?
A: We generally say that "skin allergies" such as redness, acne, and violent skin are called "contact dermatitis" in medical terms, and all kinds of discomforts are caused within 24 hours after using a certain cosmetic for the first time. It belongs to irritant contact dermatitis. It is allergic contact dermatitis when it feels uncomfortable after using it for a period of time. Contact dermatitis is more common, and some patients are not allergic to certain substances, but are caused by damage to the skin barrier function and skin function.
Q2: What behaviors in daily life may damage the skin barrier function?
A: Nowadays, many women will be busy "sipping things" on their faces after washing their faces in the morning. A layer of water, a layer of lotion, a layer of essence, a layer of isolation, a layer of sunscreen and a layer of foundation, multi-layer cosmetics increase The burden of the skin, makeup removal at night, some cleansing products contain chemicals with strong cleaning ability, which will affect the barrier function of the skin. In addition, frequent replacement of skin care products, cosmetics using superimposed functions such as shrinkage, firmness, and whitening may affect the skin's own functions.
Q3: How do I know what substance I am allergic to?
A: The safest and most authoritative way is to go to the hospital for a patch test, the allergen test. In some regular large hospitals, there are such tests. In addition to detecting some sensitized chemicals, some rubbers (27280, -255.00, -0.93%) and metals are also in the detection range. At the same time, the cosmetics that cause discomfort can also be taken to the hospital for testing to determine whether it is sensitized. If it is not a serious skin sensitive person, you can test it at home, apply the skin care product to the back of the ear or the inner wall, and wrap it with plastic wrap for 24 hours. If you feel sensitive and uncomfortable, try not to use it again.
Q4: Which substances are prone to skin irritation?
A: There are 14 kinds of chemical components to be vigilant, namely rosin, nickel sulfate, thimerosal, cobalt chloride, formaldehyde, Peruvian sesame oil, p-tert-butyl phenol formaldehyde resin, lanolin alcohol, neomycin sulfate, thiuram mixture, ring Oxygen resin, ethyl diamine, p-hydroxybenzoic acid, aromatic mixture. In addition, such as rubber or some composite metals may be the cause of skin allergies. For example, some patients often have redness and swelling on the back. After examination, they are allergic to the metal nickel on the underwear bag.
Q5: How do you choose the skin care products that suit your skin?
A: Skin sensitive people can try it at the counter when purchasing cosmetics, and take some test after applying it to the ear. When purchasing, try to choose a simple skin care product, such as only a single function, the most basic, hydrating, moisturizing, and most difficult to cause allergies. In addition, careful observation of the ingredient list is also very important, and fewer components are relatively safe.
Q6: How to be first aid after allergies?
A: If you use a skin care product to cause redness, hot skin or violent skin, be sure to stop using this product immediately and apply it with clean cold water. In normal times, you can also develop the habit of using a masked paper to soak the purified water to make a hydrating mask, moisturizing and safe. Try not to use other skin care products in the days after allergies. If the skin feels too dry, you can buy vitamin E cream in the hospital for simple application.
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