How to test if a product causes skin allergies

In the case of cosmetics, it is generally recommended to apply it behind the ears, which is the most sensitive area, and if there is redness or discomfort, it will cause allergies.

Regarding the problem of sunscreen causing molting, it depends on what kind of situation it is, there is a situation called mud rubbing, I don't know if you know, this is not caused by sensitivity. If it's really molting, it may also be a sunburn caused by not replenishing the sunscreen in time, and if it molts soon after applying it, don't use it again.

Sensitivity** Attention conditioning can be improved.

Take the product and put it on your arm first, if there is redness and swelling, it is an allergen, if there is no problem after 15 minutes, then it is fine.

It is recommended to apply it on the inside of the arm or behind the ear where the sensitivity is relatively high! It's even more obvious that way! After 36 hours, see if there is any bad reaction!

Start by rubbing a small amount on your wrist and make it thinner to observe the reaction.

This is the same as the subcutaneous test before hitting the hanging bottle

However, this method will not be completely accurate, but at least you can try out those cosmetics that have a great allergic reaction Find products that are not allergic, and stick to it This is the king

I'm also allergic to the Neutrogena sunscreen. The mouth is swollen. Uncomfortable.

The point is that I don't have allergies to rub this sunscreen behind my ears and on my body. Allergies are really hard to prevent.

Skincare product allergy search test method:

1. Apply behind the ear:

The ** behind the ears and the ** on the face are particularly similar, and the ** behind the ears is generally more sensitive, and if the skin care products used are not suitable, they will react in time.

Generally, the basic skin care products are absorbed relatively quickly, and when purchasing, you can ask the shopping guide to help apply the test on the ** behind the ear, and then walk around the mall for half an hour to an hour or so, if there is no allergy, then you can buy this skin care product when you go home.

However, the accuracy of this test method is not high, and it is suitable for temporary use to detect whether skin care products are allergic when shopping outside.

2. Arm test.

The arm test is more troublesome but more accurate, and generally we can test it with skin care products that will cause allergies.

Soak the clean gauze with distilled water or saline, wring it into semi-dry, fold it into 4 layers about one square centimeter, and apply the skin care product to be tested to one side of the gauze.

Then cover this side to the inside of the forearm or the back of the hand, cover it with about square centimeters of non-breathable cellophane or plastic film, fix it with tape and seal it, after 24-48 hours, if there is discomfort, it means that you are allergic to this kind of skin care products, you should remove it in time and wash it with water Qingkai, if there are no symptoms, it means that you are not allergic.

Allergy testing of skincare products is done to ensure the safety and suitability of the product. It can help consumers determine if they have an allergic reaction to a skincare product and avoid using products that may cause discomfort. Regarding the allergy test of skin care products, we can understand from the following perspectives.

You can use the ** sensitivity test to test whether skin care shouting mold products will cause allergic reactions. This test method is usually performed in a hospital or professional institution and is performed by professionals. They will apply the skincare product to the back or inner arm and observe for allergic symptoms such as erythema and itching after a period of time.

This test method is more accurate and reliable, but it takes time and cost.

Consumers can also conduct a simple allergy test on their own. The method is to apply a small piece of the skincare product to a sensitive area, such as behind the ear or on the inside of the wrist, and observe if there is any discomfort. If there are no allergic symptoms such as redness, swelling, itching and so on within 24 hours, the product can generally be considered safe for oneself.

However, it should be noted that everyone's sensitivity is different, so the results may not be universal.

You can also check the ingredient list to determine if a skincare product is prone to allergies. The ingredients in skincare products are usually listed on the product packaging, and consumers can be aware of some common allergens, such as alcohol, preservatives, fragrances, etc. If you have an allergy or sensitivity to an ingredient, it's best to choose a product that doesn't contain the ingredient to avoid allergic reactions.

When using a new skincare product, you need to pay attention to a step-by-step trial. Even if you have passed an allergy test, there is a chance that you will have a reaction due to individual differences. Therefore, when using a new product, it is recommended to try it on a small area such as behind the ear or on the inside of the wrist, and if there is no discomfort within 24 hours, gradually expand the range of use.

Skincare allergy testing is a very important job. Whether it's through a professional body or testing on our own, we treat it with care. For those who are prone to allergies, it is even more important to carefully choose the right products and conduct personalized tests and uses according to their own conditions.

While everyone's allergic reaction to skincare products is different, we recommend that you take an allergy test before using a new product. With a reasonable testing method, we can better judge whether the product is suitable for us and avoid possible allergic reactions. If you are particularly worried about yourself, you can consult a doctor, who will give professional advice and guidance.

I hope you can choose the right skin care products for you and are safe and worry-free!