Korean Sunscreen in the US: SPF and PA Explained

Read the two systems separately

The PA system was developed in Japan and appears on many Korean sunscreens. PA++++ corresponds to a measured UVA protection factor of 16 or more under the Japan Cosmetic Industry Association standard. It is a category, not a promise that every PA++++ product offers the same exact UVA factor. SPF primarily measures protection against sunburn, which is chiefly caused by UVB exposure.

A US broad-spectrum claim is based on a different test and label framework. You cannot convert a PA grade into a US broad-spectrum claim or assume that SPF 50 in one market means the same formulation is sold in another. Protection also depends on applying enough product and reapplying as directed.

What a US shopper should check

In the United States, sunscreen is regulated as an over-the-counter drug. Check the exact pack for Drug Facts, active ingredients, broad-spectrum language, SPF, directions and warnings. The American Academy of Dermatology recommends broad-spectrum SPF 30 or higher. Water-resistant products state 40 or 80 minutes; no sunscreen is waterproof.

If you are shopping on a Korean marketplace or while travelling, confirm the country version and the product's intended market. An imported cosmetic listing, a translated product name or a familiar tube design is not enough to establish that a sunscreen has a US Drug Facts label. Choose shade and protective clothing as part of sun safety, too.

One brand, different market formulas

Beauty of Joseon's Day Dew is a useful US example because the official page identifies it as a US-market sunscreen and lists avobenzone 3%, homosalate 7%, octisalate 5% and octocrylene 5% as actives. The brand describes broad-spectrum SPF 50 and 80-minute water resistance. It says Day Dew differs from its overseas Relief Sun product; do not swap their ingredient lists or filter claims when comparing reviews.

The best sunscreen is one you can apply generously and reapply. Texture preferences matter, but a skincare-style finish does not alter the label's usage instructions. Compare current packaging because formulas, stock and market availability can change.

Use a scan to translate, then verify

Project Glow's product scanner can help translate a Korean or Japanese label and explain the listed filters or claims in context. It cannot independently verify an SPF test, authenticate a batch or certify US regulatory status from a product photo. When a claim needs an exact market label, the physical pack and current official source take priority.