Forgot your password?

Registration

company

brands

An unpredictable error occurred on the server. It will be fixed soon

Did you notice an error? Contact the editor

A confirmation email has been sent to your {email} email!

Your password has been successfully changed!

Something went wrong. Please try again later.

The password change request has been successfully sent to your email address.

Rules for publishing comments

The article was translated into English using automatic translation. The editors are working on its improvement.

we are working on a translation. Follow the link or use Google Translate

Prevention of photoaging

Cosmetics

<h2>Solar radiation and its impact on humans</h2>

To choose the optimal sunscreen product, it is necessary to remember the characteristics and parameters of ultraviolet waves, because by understanding the mechanism of their influence, we will be able to clearly predict the effect on the skin and cells.

Ultraviolet radiation includes rays of the UVA, UVB and UVC spectrum. The rays of the UVC spectrum have the shortest wavelength and are blocked by the ozone layer 100%, and at the same time, flight attendants, pilots and people who fly airplanes are most exposed to them. Therefore, it is worth closing the porthole curtains and wearing sunglasses, especially during long flights.&nbsp;

As for the effect of UVB rays, it is either a tan or a burn, and the wavelength corresponds to the depth of penetration into the skin at the level of the epidermis, thus stimulating the melanocyte. For our latitudes, the peak exposure to UVB rays is in the spring and summer months, which is especially important for the synthesis of vitamin D.&nbsp;

The depth of penetration of UVA rays into the skin is the level of the dermis. Sun intolerance is associated with UVA-2 rays, while UVA-1 is responsible for photoaging. A feature of UVA rays is that we do not always see the result of exposure immediately, because if a tan or burn appears on the skin from UVB rays, hyperpigmentation due to exposure to UVA radiation can occur even after several years.

Full version of the access article i<a href="https://pro.bhub.com.ua/cosmetology/pravila-bezpechnoyi-zasmagi-soncezahisni-filtri">n Ukrainian</a>

Rules for safe tanning: sunscreen filters