The SKIN1004 Sunscreen Line, Explained: Every Product Sorted by Filter and Format
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SKIN1004 doesn’t sell one sunscreen. It sells a shelf of them, and the names blur together fast: Water-Fit, Air-Fit, Silky-Fit, Plus, Light. If you’ve ever stood on a product page unsure which SKIN1004 sunscreen you were even looking at, this guide sorts the line by what matters, the filters inside and the format on your face. Every ingredient list below comes straight from the ingredient databases, so nothing here is guessed.
TL;DR: The SKIN1004 sunscreen line splits into two families. The Hyalu-Cica products (Water-Fit Sun Serum and Silky-Fit Sun Stick) use modern chemical filters, so they go on clear with no white cast. The Air-Fit Suncreams (Plus and Light) use mineral zinc oxide, which is the pick if you want a physical filter and don’t mind a possible faint cast. Most are SPF50+ PA++++, with the Air-Fit Light at SPF30. Pick by format and filter type, not by the marketing name.
What is actually in the SKIN1004 sunscreen line?
Every product in the SKIN1004 sunscreen range is built around centella asiatica, the brand’s signature soothing plant. That part is consistent across the lineup. What changes from one to the next is the UV filter system, and that’s the thing that decides how a sunscreen feels and who it suits.
Sort the line by filter type and it gets simple. There are two groups:
- Chemical filter group (Hyalu-Cica): the Water-Fit Sun Serum and the Silky-Fit Sun Stick. Modern chemical filters, clear finish, no cast.
- Mineral filter group (Air-Fit): the Air-Fit Suncream Plus and Air-Fit Suncream Light. Zinc oxide, a physical filter, better suited to people who prefer mineral but more likely to leave a light cast.
Once you know which group a product is in, the name stops being confusing. Everything else is format and SPF.
The chemical side: Water-Fit Serum and Silky-Fit Stick
These two are the Hyalu-Cica products. They use chemical UV filters, which is why Korean reviewers describe them as watery and invisible with no white cast. If the reason you looked at SKIN1004 in the first place was the “feels like nothing” reputation, it comes from this side of the line.
Hyalu-Cica Water-Fit Sun Serum (SPF50+ PA++++)
This is the famous one, the lightweight sun serum that put the brand on a lot of shelves. It uses four modern chemical filters: Diethylamino Hydroxybenzoyl Hexyl Benzoate (Uvinul A Plus) for UVA, Ethylhexyl Triazone (Uvinul T 150) for UVB, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (Tinosorb M), and Diethylhexyl Butamido Triazone (Iscotrizinol) [1]. It also carries a high dose of centella asiatica extract plus niacinamide and hyaluronic acid, which is why it feels closer to skincare than to a heavy sunblock. We broke this one down in full in our sun serum guide for oily skin. It’s the watery, low-cast option for daily face use. Check price
Hyalu-Cica Silky-Fit Sun Stick (SPF50+ PA++++)
Same Hyalu-Cica idea, different format. The Silky-Fit Sun Stick is a twist-up balm you swipe on, which makes it the touch-up member of the line, easy to reapply over makeup or on the go. It also uses chemical filters, though a slightly different set: Uvinul A Plus and Ethylhexyl Triazone again, plus Polysilicone-15 (Parsol SLX) and Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (Tinosorb S) [2]. Silica in the formula keeps the finish on the matte side [2]. Reviewers pick it for reapplication and oily-to-combination skin. Check price
The mineral side: Air-Fit Suncream (Plus and Light)
The Air-Fit line is where SKIN1004 goes mineral. Instead of chemical filters, these use zinc oxide, a physical filter that stays on the skin surface and reflects UV. The upside is that some people prefer a mineral filter, especially for reactive or sensitive skin. The honest trade-off is that mineral formulas are more likely to leave a light cast than the clear Hyalu-Cica pair above.
Madagascar Centella Air-Fit Suncream Plus (SPF50+ PA++++)
The higher-protection mineral option. Its filter system is zinc oxide with titanium dioxide, both physical filters, for broad-spectrum SPF50+ PA++++ coverage [3]. It carries a high load of centella extract for the soothing angle. This is the SKIN1004 sunscreen to look at if you specifically want a mineral filter at full strength. Check price
Madagascar Centella Air-Fit Suncream Light (SPF30 PA++++)
The lighter, lower-SPF mineral version. It uses zinc oxide as its filter and is rated SPF30 PA++++ [4]. SPF30 still blocks a lot of UVB, but if you want the higher number, the Plus above is the one. Think of the Light as an everyday, lower-commitment mineral option for calmer sun days. Check price
The full line, side by side
Here is every product with its filter system, SPF, and format in one place. All filters are pulled from the ingredient databases.
| Product | Filter type | SPF / PA | Format | Best for |
|---|---|---|---|---|
| Hyalu-Cica Water-Fit Sun Serum | Chemical (4 modern filters) [1] | SPF50+ PA++++ | Watery serum | Clear daily face wear |
| Hyalu-Cica Silky-Fit Sun Stick | Chemical (4 filters) [2] | SPF50+ PA++++ | Twist-up stick | Reapply on the go |
| Air-Fit Suncream Plus | Mineral (zinc oxide, titanium dioxide) [3] | SPF50+ PA++++ | Cream | Mineral fans, full strength |
| Air-Fit Suncream Light | Mineral (zinc oxide) [4] | SPF30 PA++++ | Cream | Lighter mineral daily |
Which SKIN1004 sunscreen should you pick?
Skip the names and match by what you want:
- You want the clear, watery, no-cast one everyone talks about: the Water-Fit Sun Serum. Chemical filters, lightweight, made for the face.
- You need to reapply over makeup or during the day: the Silky-Fit Sun Stick. Same clear-finish chemistry in a swipe format.
- You specifically want a mineral filter at full SPF: the Air-Fit Suncream Plus. Zinc oxide, SPF50+, with the cast trade-off that mineral formulas carry.
- You want a lighter mineral cream for easy days: the Air-Fit Suncream Light at SPF30.
If sunscreen bunching up under makeup is your real problem, that is usually a layering issue rather than a bad product, and we cover the fix in our guide to sunscreen pilling on oily skin. For the bigger picture on how to choose any Korean SPF, our Korean sunscreen guide walks through cast, finish, and filters.
One catch with the US versions
If you buy SKIN1004 in the United States, the tube may not match the Korean formula you read about. The Water-Fit Sun Serum sold on US shelves is a separate reformulation with older filters like avobenzone and octocrylene, because the US and Korea approve different UV filters [5]. The name on the front stays the same while the actives on the back change. We explained why that gap exists when the FDA approved its first new filter in decades. If you want the modern-filter formula from the Korean columns above, read the ingredient list before you check out.
FAQ
What is the difference between SKIN1004 Water-Fit and Air-Fit sunscreen?
Water-Fit uses modern chemical filters, so it goes on clear and watery with no white cast, and it comes as a lightweight sun serum. Air-Fit uses mineral zinc oxide, a physical filter, which suits people who prefer mineral but is more likely to leave a light cast. Both are built around centella asiatica. Water-Fit is the clear daily pick, Air-Fit is the mineral option.
Is SKIN1004 sunscreen chemical or mineral?
It depends on the product. The Hyalu-Cica Water-Fit Sun Serum and Silky-Fit Sun Stick use chemical filters, while the Air-Fit Suncream Plus and Air-Fit Suncream Light use mineral zinc oxide. So the SKIN1004 sunscreen line has both, and you choose the type by choosing the product.
Which SKIN1004 sunscreen is best for oily skin?
Most oily-skin reviewers reach for the Water-Fit Sun Serum for its light, watery finish, or the Silky-Fit Sun Stick, which has a shine-controlling finish and is easy to reapply. Both use chemical filters and skip the heavier feel. The mineral Air-Fit creams are thicker and aimed more at people who want a physical filter.
What SPF is the SKIN1004 sunscreen line?
Most of the line is SPF50+ PA++++, including the Water-Fit Sun Serum, the Silky-Fit Sun Stick, and the Air-Fit Suncream Plus. The Air-Fit Suncream Light is the exception at SPF30 PA++++. If you want the highest number, pick any of the SPF50+ options.
Sources
Ingredients and filters (verified 2026-07-18):
[1] SKIN1004 Madagascar Centella Hyalu-Cica Water-Fit Sun Serum SPF50+ PA++++, INCIDecoder (Uvinul A Plus, Ethylhexyl Triazone, Tinosorb M, Iscotrizinol; centella extract, niacinamide, hyaluronic acid): link
[2] SKIN1004 Madagascar Centella Hyalu-Cica Silky-Fit Sun Stick, INCIDecoder (Uvinul A Plus, Ethylhexyl Triazone, Polysilicone-15, Tinosorb S): link
[3] SKIN1004 Madagascar Centella Air-Fit Suncream Plus, INCIDecoder (zinc oxide, titanium dioxide): link
[4] SKIN1004 Madagascar Centella Air-Fit Suncream Light SPF30 PA++++, INCIDecoder (zinc oxide): link
[5] SKIN1004 Madagascar Centella Hyalu-Cica Water-Fit Sun Serum UV (US version), INCIDecoder (reformulated with older filters): link
