Sunscreens provide varying degrees of protection against the harmful effects of sun rays, which can cause skin cancer and photoaging. Dermatologist Vera Voronina explains that product labeling can be used to determine its effectiveness.
Studies have shown that solar radiation accelerates skin aging, causing the appearance of age spots and wrinkles. This is called photoaging. In addition, sun rays increase the risk of developing skin cancer.
The SPF label indicates whether a product provides protection against type B rays that cause redness and burns. They penetrate only the top layer of the skin and are less dangerous than Type A rays, which penetrate deeper and can cause more damage. For Type A protection, the definition of “broad spectrum protection” is used. There is also a designation with an asterisk where 5 stars indicate maximum protection, or PA +, where the plus number indicates the degree of protection (four pluses maximum).
Source: Ferra
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