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Korean sunscreens for oily skin tend to fall into two camps: chemical filters designed for a matte, non-greasy finish, or physical (mineral) filters built around calming ingredients like centella asiatica. COSRX and SKIN1004 represent one product from each camp. Below is a side-by-side look at how they’re formulated and what each is actually built to do, based on published ingredient lists and brand information.
The Two Products Compared
| Product | Filter Type | SPF / PA Rating | Key Ingredients | Finish | Formulated For |
|---|---|---|---|---|---|
| COSRX Vitamin E Vitalizing Sunscreen | Chemical filter | SPF 50+ / PA+++ | Vitamin E, cotton extract, silica | Semi-matte, no white cast | Oily/combination skin wanting oil control without a mineral cast |
| SKIN1004 Madagascar Centella Air-Fit Suncream Plus | Physical (mineral) filter — non-nano zinc oxide | SPF 50+ / PA++++ | Centella asiatica extract (~49%), niacinamide | Matte with a slight beige tone-up | Sensitive, redness-prone, or acne-prone skin wanting a calming formula |
What Sets Each One Apart
COSRX uses a chemical UV filter system paired with cotton extract and silica, two ingredients that function like a built-in blotting layer — absorbing surface oil throughout the day. Its PA rating is PA+++, meaning it’s tested against a narrower band of UVA wavelengths than a PA++++ product.
SKIN1004 is a 100% physical sunscreen using non-nano zinc oxide, which sits on top of the skin rather than absorbing into it. It carries a PA++++ rating, reflecting broader UVA filter coverage under Korean testing standards. The formula is built around a high concentration of centella asiatica extract, an ingredient associated with calming and soothing irritated or reactive skin, plus niacinamide for tone-evening support.
A Note on Filter Type
Chemical and physical sunscreens work differently: chemical filters absorb UV radiation and convert it to heat, while physical (mineral) filters sit on the skin’s surface and deflect it. Neither is inherently superior — physical filters are generally better tolerated by reactive or sensitive skin, while chemical filters like COSRX’s tend to apply more invisibly with less risk of a visible cast on deeper skin tones, though SKIN1004’s non-nano zinc formula is also marketed as low-cast.
Where to Check Current Details
Formulations, availability, and PA ratings by region can change, so it’s worth checking current listings directly:
- COSRX Vitamin E Vitalizing Sunscreen — Amazon listing
- SKIN1004 Madagascar Centella Air-Fit Suncream Plus — Amazon listing
How to Apply Either One
Both are designed as the last step of a morning skincare routine. Apply a generous, even layer to clean skin — roughly a quarter teaspoon for the full face — about 15 minutes before sun exposure, and reapply every two hours if you’re outdoors for an extended period. Physical sunscreens like SKIN1004 can settle into a more visible layer if under-applied, so err on the side of a fuller first coat.
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