Testing dev

Are cosmetics tested

prior to

market placement?

Yes, without a doubt

Are there any mandatory tests?
The answer is yes, depending on the type of cosmetic. This time, however, I wanted to focus on research that is not mandatory but should be.

Analyses of phototoxicity and photoallergy
Both tests are mainly conducted on raw materials and photoprotective products.

Paradoxically, when exposed to UV radiation, chemical sunscreens can cause side effects

As you know, in order to protect ourselves from the sun, we apply cosmetics with SPF. Evaluation of these tests is, therefore, extremely important.

An overview of the tests

The product is applied to a given area of the skin, which is then irradiated with UVA, UVB, and UVC light.

In the following step, the skin is examined for signs of phototoxicity and/or photoallergies, for example, blisters filled with fluid or erythema.

Each subject's phototype is determined before the test, as well as his or her reaction to irradiation without the tested cosmetic.

What is the purpose of writing about this?

Acidic products have long been declared non-phototoxic and non-photoallergic.

In most cases, manufacturers' assurances are not backed up by testing of a given cosmetic, but rather by testing of acids used, which does not apply 1:1 to the final product.

It is important to remember that cosmetic products are mixtures. As raw materials combine, numerous chemical reactions can occur, changing the properties of the resulting product. Furthermore, some raw materials in the products, such as solvents or preservatives, may already be harmful when exposed to UV rays.

Based on what we know, SkinTra also indicates that no phototoksically or allergicly stimulating activities are taking place. However, our statement is based on the results of research conducted in this area.

A total of 30 probands with phototypes I-III took part in the study. None of the participants experienced an adverse reaction. Therefore, the products can be used all year round, even in the summer.

As with all types of cosmetics, when a product causes thinning and sensitivity, the possibility of discoloration or irritation increases. Therefore, it is essential to use photo-protective cosmetics year-round.