The SKIN1004 Sunscreen Line, Explained: Four of Its Products 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 four SKIN1004 sunscreens in this guide split into two families. The Hyalu-Cica products (Water-Fit Sun Serum and Silky-Fit Sun Stick) use modern chemical filters. 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.
This is an ingredient-label analysis of each product, based on the sources at the end rather than wear tests of our own (see how we work).
What is actually in the SKIN1004 sunscreen line?
All four products here contain 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. Tage splits along the same line, which is the useful way to read a brand that appeared from nowhere this summer: part of the range runs modern filters and part runs an older mix.
Sort these four products 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.
- 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.
Hyalu-Cica Water-Fit Sun Serum (SPF50+ PA++++)
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, so its ingredient list looks closer to skincare than to a heavy sunblock. We broke this one down in full in our sun serum guide for oily skin.
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].
The mineral side: Air-Fit Suncream (Plus and Light)
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 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.
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 four products, side by side
Here is each one 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 | 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 watery serum: 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. Chemical filters 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]. Its US drug label is on file at DailyMed, where Craver Corporation lists the Water-Fit Sun Serum UV as an over-the-counter monograph sunscreen with four active ingredients, avobenzone 2.7%, homosalate 13.6%, octisalate 4.5% and octocrylene 9%, and a marketing start date of 1 September 2025 [6]. None of those four appears in the Korean Water-Fit formula described above, which uses Uvinul A Plus, Ethylhexyl Triazone, Tinosorb M and Iscotrizinol [1]. 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 and 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 chemical-filter 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?
For oily skin, look at the Water-Fit Sun Serum or the Silky-Fit Sun Stick. Both use chemical filters. The mineral Air-Fit creams are aimed more at people who want a physical filter.
What SPF is the SKIN1004 sunscreen line?
Three of the four products here are SPF50+ PA++++: 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
US drug label (read 2026-09-28):
[6] DailyMed, SKIN1004 Madagascar Centella Hyalu-Cica Water-Fit Sun Serum UV, labeler Craver Corporation, set id 38d8c1c9-86b5-1edd-e063-6394a90aeb47, SPL version 5 published Sep 1, 2026. Marketing category OTC Monograph Drug (M020), marketing start date 2025-09-01. Active ingredients per 100 mL: avobenzone 2.7 g, homosalate 13.6 g, octisalate 4.5 g, octocrylene 9 g: link
Topics: Centella · Chemical Filters · Mineral Sunscreen · No White Cast · Oily Skin · PA / UVA Rating · Reapplication · SKIN1004 · Sun Serum · Sun Stick · Tinosorb · All topics
