Understand the correct SPF, PA numbers to choose sunscreen

Video content is professionally consulted by Dr. Pham Duc Tho - Vinmec - View Aesthetic Center, Vinmec Times City International Hospital

Sunscreen is a product that can help protect the skin from the effects of the sun. That's why many people have the habit of applying sunscreen before leaving the house. Currently, there are many people who, despite using sunscreen regularly, do not know what the spf index is? How to choose the right one?

On the issue of "what is the spf index?", Dr., Doctor Pham Duc Tho - Vinmec - View Aesthetic Center, Vinmec Times City International Hospital said: On each box of sunscreen, there are 2 indexes (spf index and pa index), in which:
Spf is the skin protection index for UVB rays, usually > 30. For sensitive skin, it is recommended to use sunscreen with index spf below 30 to avoid irritation. Sunscreen with SPF 30 will usually protect skin for 2-3 hours, SPF 50 will protect skin for 4-5 hours. PA on sunscreen is an indicator of skin protection from UVA rays. Normally on sunscreen, the Pa index will have a symbol from 1+ to 5+. According to Dr. Pham Duc Tho, everyone should use sunscreen with a pa index of 3+ or higher. The spf and pa are standardized for all sunscreens, so there's no difference between Asian and European sunscreens. Do not use body sunscreen on the face because it can cause irritation.
Currently, on the market, there are many different types of sunscreen suitable for each skin type such as oily skin, dry skin, sensitive skin...
In terms of properties, current sunscreen has 3 basic forms. are:
Physical sunscreen: The advantage is that it can be used for sensitive skin, less irritation, allergies. The downside is glossy, sticky, clogged pores. Chemical sunscreen: The advantage is that it is not sticky. The downside is that it is not suitable for sensitive skin. Physical & chemical sunscreens. Depending on the ability and needs of each person, it is possible to choose for themselves the most suitable and effective sunscreen.