Facial cosmetics allergy, redness, swelling and itching

Because of not choosing the right cosmetics or having tried them before, you may experience allergies after using the cosmetics in the store. In fact, because allergies are too common, many people don't care about it. They often go home and just wash their faces, thinking that they will recover in a few days. In fact, cosmetic allergies can be treated with some simple and effective measures, so that the local area can recover faster.

Test Method

The method for skin allergy test of cosmetics is very simple. First, soak a piece of gauze with distilled water or saline, wring it until half dry, and divide it into 4 layers of about 1 square centimeter. Apply the cosmetics on one side of the gauze, and then apply it on the extensor side of the forearm or the normal skin of the back, and then cover it with 1.5 square centimeters of airtight cellophane or plastic film and fix it with tape.

After 24 to 48 hours of observation, if the test area is severely itchy or burning, it indicates that the cosmetic is irritating to the skin. This is a positive reaction and the test object should be removed promptly and rinsed with clean water. If there are no symptoms at the test site, it is a negative reaction, indicating that the cosmetic is non-irritating to the skin and is relatively safe.

If simple erythema and itching appear, it is weakly positive; if redness, swelling and papules appear, it is moderately positive; if significant redness, swelling, papules and blisters appear, it is strongly positive; if significant blisters or even necrosis appear, it is extremely strongly positive. If a positive reaction occurs, in addition to timely cleaning and treatment, it is also recommended that the cosmetics must never be used.

Prognosis

If skin allergies are caused by improper use of cosmetics, you must go to the hospital for treatment in time, and do not use ointments for treating general skin diseases at will. Otherwise, it will cause rough skin, pigmentation, and aggravate skin diseases. After an allergic reaction to cosmetics occurs, you must first stop using cosmetics, and then observe which symptom you have. If using cosmetics causes allergies, what are the common allergic reactions? Generally speaking, dermatitis caused by cosmetics include: contact dermatitis, cheilitis, photosensitivity, herpes, acne, etc.

Reaction classification

Reaction Overview

So, if the use of cosmetics can cause allergies, what are the general allergic reactions? Generally speaking, incompatible dermatitis caused by cosmetics include: contact dermatitis, cheilitis, photosensitivity, herpes, acne, hormone-dependent dermatitis, etc.

About 5-10% of people develop contact dermatitis due to the use of cosmetics, and 2-5% develop contact eczema due to cosmetics, which accounts for about 40% of facial dermatitis. This type of cosmetics mainly includes: skin care products, hair products and makeup products, followed by nail polish, perfume, cleaning products, shaving products and sunscreen products. Most of these products contain added fragrances and preservatives, so the most common allergens in cosmetics are caused by fragrance ingredients and preservatives.

Cheilitis is a common condition that causes sensitivity to lipstick. The main allergens that cause sensitivity after using lipstick are preservatives and fragrances. In addition, the solvent that dissolves the pigment is also one of the irritating factors. In addition, impurities in the matrix such as oil, wax, cocoa butter, etc. may also cause sensitive cheilitis.