Guide to UVA and UVB protection from the sun
Skincare · Educational Video
About this work
This video explains the difference between UVA and UVB rays and how to identify sunscreens that protect against both. It shows the packaging of a sunscreen with SPF and PA ratings, and a close-up of a cream product. The video also includes graphics illustrating how UV rays affect the skin and a report on the clinical testing of a sunscreen.
Read the transcript
So you've heard of UV before. But did you know that there are two types of UV rays that reaches your skin? UVA and UVB. Let's talk about it. About 95% of the UV radiation reaching Earth's surface is UVA, while only 5% is UVB. UVB: Shorter wavelength (280-315 nm), Affects the outer layer of the skin (epidermis), Main cause of sunburn. UVA: Longer wavelength (315-400 nm), Penetrates deeper, Contributes to aging, wrinkles, and pigmentation. When you buy sunscreen, SPF is the only thing you should be checking. But what about PA++++? PA measures UVA protection. It shows how well a sunscreen protects your skin from UVA rays. PA rating guide. PA+: Some protection. PA++: Moderate protection. PA+++: High protection. PA++++: Very high protection. PA++++: Offers the highest level of sun aging, dark spots, and long-term sun damage. UVA rays are present every day, even when it's cloudy. IUNIK centella calming daily sun water. Calming & hydration. Ultra sheer lightweight. UV Defense Sun Water. SPF 50 PA++++. Clinicaly proven. UV blocking effect. I paired it with their Centella Relief Sorbet Cream. Centella asiatica, also known as cica, is commonly used in skincare for its soothing and skin barrier supporting properties. Giving you lightweight hydration before sunscreen. So next time you're choosing sunscreen, don't just check the SPF, check the PA rating.
Created by