Summer is coming, everyone likes to use sunscreen. What kind of sunscreen is safe and effective? Let's look at an experiment from BASF scientists first.
BASF scientists have done an interesting experiment to study how sunscreen products produce free radicals after exposure to light. One group uses light-stable sunscreens, while the other group contains light-labile sunscreens BMDBM.
As a result, it was found that formulas containing light-labile sunscreens would produce peroxidative free radicals induced by UV. That is to say, after using this sunscreen product, after being irradiated with ultraviolet light, the sunscreen product itself would generate a lot of free radicals, which would be harmful to human skin. It is easy to produce irritation, and then easily induce acne aestivalis.
BASF scientists also conducted skin safety tests on these two sets of formulas, and the results also showed that formulas using light-unstable sunscreens are likely to cause summer acne in sensitive people. There is no problem with formulas using light-stable sunscreens.
Let's take a look what are the main light stable sunscreens ingredients:
1. DHHB (uvinul A plus) has weaker protection than BMDBM, but has strong stability and is a common ingredient in sunscreens.
2. BEMT (Tinosorb S， Bemotrizinol), an effective ingredient that protects the second stage of UVA. It has strong protection, but the ability to prevent ultraviolet rays after 370nm is poor, but ultraviolet rays after 370nm are usually considered to be an important cause of cumulative skin aging.
3. MBBT (Tinosorb M), anti-UVA in the whole, good protection effect in the second half (especially the ultraviolet band after 370nm), but the protection strength is weaker than BEMT. Therefore, the above two have their own advantages, and a good sunscreen is likely to appear together.
IPv6 network supported
English
中文
français
Deutsch
русский
español
português
العربية
日本語
한국의
Türkçe
