SKIN1004 Madagascar Centella Hyalu-Cica Water-Fit Sun Serum SPF50+ PA++++
SKIN1004 · 스킨1004 · Audited by KBR Research Desk · Updated Jul 2026
Source audit · white-cast test pending · no affiliate links
The verdict
A lightweight, glowy-serum Korean SPF50+ with a modern filter system and unusually complete documentation — but version-check first: the KR/global PA++++ tube and the US 'Sun Serum UV SPF50' are different sunscreens with different filters.
✓ Buy if
you want a light, glowy daily Korean SPF · makeup-compatibility and fast absorption matter · you'll version-check before buying
✗ Skip if
you need a sweat- or water-resistant sunscreen · you want a brand-pinned SPF lab certificate · you dislike dewy finishes
Key takeaways
- Two different products share one name: the KR/global SPF50+ PA++++ (modern filters — DHHB, Ethylhexyl Triazone, MBBT, DEBT) and the US 'Sun Serum UV SPF50' (older US actives — Avobenzone, Homosalate, Octisalate, Octocrylene). Ulta/Olive Young US sell the US version; YesStyle/Stylevana sell the PA++++ one.
- Independent coverage (incl. cosmetic chemist Lab Muffin) leans positive on light texture, fast absorption, and makeup compatibility; the clearest repeated limitation is that it's not sweat/water-resistant.
- Deep-tone cast is unsettled — community and video evidence is mixed, and the MBBT filter can contribute a cast — so KBR marks it pending its own tone-strip photos.
How it scored
Which version are you actually buying?
This is the review. “SKIN1004 Hyalu-Cica Water-Fit Sun Serum” is two different sunscreens depending on where you buy it. The KR/global product is SPF50+ PA++++ with a modern filter set — DHHB, Ethylhexyl Triazone, MBBT (Tinosorb M), and DEBT. The US product, sold as “Sun Serum UV SPF50,” is a reformulation with older US-monograph actives: Avobenzone 2.7%, Homosalate 13.6%, Octisalate 4.5%, and Octocrylene 9%.
Where you land depends on the retailer. Ulta and Olive Young US carry the US UV SPF50 version; YesStyle and Stylevana still list the KR/global PA++++ formula (and it's cheaper there). If you specifically want the modern-filter tube people praise, buy from a channel that names SPF50+ PA++++ — don't assume the Ulta tube is the same product.
| KR / global | US “Sun Serum UV” | |
|---|---|---|
| SPF / PA | SPF50+ PA++++ | SPF50 (no PA rating) |
| Filters | DHHB, EHT, MBBT, DEBT | Avobenzone, Homosalate, Octisalate, Octocrylene |
| Sold at | YesStyle, Stylevana, OY Korea | Ulta, Olive Young US |
| Price seen | ~$9.50–19 | ~$15.20–26 |
Spotting the right (and real) one
Two things to get right at checkout. First, the version (above): confirm the listing names SPF50+ PA++++ if that's what you want. Second, the seller: SKIN1004 has posted its own fake-vs-real guidance for this exact product, so marketplace listings from unknown third parties carry counterfeit risk. Prefer SKIN1004 direct, Olive Young (KR / Global / US), Ulta or iHerb for the US UV version, or established Asian retailers (YesStyle, Stylevana) for the PA++++ formula — and be wary of “too cheap” marketplace offers unless you can verify the seller.
Has the SPF been independently verified?Secondary sources cite KDRI figures (~SPF 50.5); KBR found no brand-pinned lab certificate and no independent SPF re-test, so it doesn't match Beauty of Joseon's two-lab transparency.
Post-Purito, SPF transparency matters to Korean-sunscreen buyers. For the PA++++ formula, secondary coverage (Doctor Anne) cites Korea Dermatology Research Institute testing at SPF 50.5 ± 7.1 and PFA 16.56 ± 2.69 — but KBR could not pin the original brand certificate, so treat those as secondary, not brand-verified, numbers.
The 2025 Korea Consumer Agency market investigation included SKIN1004's PA++++ product among 38 sunscreens but, per a summary, did not SPF-test them and did not flag SKIN1004 among the products with claim problems. KBR found no independent SPF re-test showing this product under- or over-performing. Bottom line: reasonable secondary evidence, but it doesn't reach the two-lab transparency KBR credits Beauty of Joseon for.
White cast and finish, honestlyLight-to-medium reports lean no-cast and glowy; deep-tone evidence is mixed and MBBT can cast — pending KBR tone strips. The finish reads dewy, which some call glowy and some call oily.
On light-to-medium skin, most coverage (including Lab Muffin) reports little-to-no cast and a hydrating, slightly dewy finish that's easy under makeup. On deeper skin the evidence splits: some reviewers report no cast, others a dull or slightly grey look, and the MBBT filter is a known mechanistic reason a “chemical” sunscreen can still cast. KBR hasn't shot its own cross-tone strips yet, so we mark deep-tone cast unsettled rather than claiming “no cast on all skin tones.”
On finish: the same dewiness that reads as “glowy” to dry/normal skin can read “oily” to some oily-skin users. It's a light serum-sunscreen, not a matte one — and it's explicitly not sweat- or water-resistant, so it's a daily/indoor-commute SPF, not a beach or sport one.
Strengths & watch-outs
✓ Strengths
- Lightweight, glowy-serum finish that absorbs fast and layers well under makeup (widely reported)
- Modern KR/global filter system (DHHB, Ethylhexyl Triazone, MBBT, DEBT) and unusually complete public documentation
- Cheap for the PA++++ formula via US-access Asian retail (~$9.50–10)
✗ Watch-outs
- Two different formulas share one name — the US 'UV SPF50' tube (Ulta / Olive Young US) uses older US filters, not the modern KR/global set
- No brand-pinned SPF lab certificate found (only secondary KDRI figures); not sweat/water-resistant
- Deep-tone cast is unsettled — mixed community/video evidence, and MBBT can cast; pending KBR tone strips
Who it's for
Daily-SPF users who want a light, glowy serum-sunscreen and will check which version they're buying.
Not for
Anyone needing sweat/water resistance, a brand-pinned SPF certificate, or who expects the Ulta/US tube to be the PA++++ formula.
independent creators · embedded from source
What reviewers are saying
Cosmetic chemist (PhD) · YouTube · Nov 2022
Sponsored, but a chemist's read: a lightweight chemical sunscreen with newer filters, very smooth under makeup, hydrating with no white cast on medium tones — not a sport sunscreen.
Doctor · YouTube · Nov 2022
Sponsored review: likes it as a lightweight “office sunscreen” with no cast on pale skin; cites KDRI SPF/PFA figures and would use a higher-PFA product for beach or hikes.
YouTube · May 2026
A daily-wear test: dries down in a few minutes, slightly glowy not greasy, no eye sting, no white cast — and explicitly not for sweaty or water activities.
YouTube · Apr 2026
Unsponsored: no eye sting or pilling and no obvious cast on her skin, but a dewy, borderline-oily finish, possible dullness on deeper tones, and not sweat/water-resistant.
Full data & receipts
Sources · formula · pricing · changelog
Full data & receipts
Sources · formula · pricing · changelogHow we scored
Documentation · 9.0 — Full INCI and UV-filter systems for both versions, sizes, SKUs, and multi-channel pricing are all pinnable to official + retailer pages.
Formula clarity · 8.2 — A clear, modern KR/global filter set — but the KR-vs-US formula split is a real complexity the label doesn't flag.
Buyer fit · 7.6 — Excellent light daily SPF, docked for version confusion and unsettled deep-tone cast.
Value · 8.4 — As low as ~$9.50–10 for the PA++++ formula via US-access Asian retail; official US $15.20.
| Filter (INCI) | Alias | Protects |
|---|---|---|
| Diethylamino Hydroxybenzoyl Hexyl Benzoate | DHHB / Uvinul A Plus | UVA |
| Ethylhexyl Triazone | Uvinul T 150 | UVB |
| Methylene Bis-Benzotriazolyl Tetramethylbutylphenol | MBBT / Tinosorb M | Broad UVA/UVB |
| Diethylhexyl Butamido Triazone | Iscotrizinol | UVB + UVA-II |
| Channel | Price | Observed |
|---|---|---|
| Olive Young Korea (PA++++) | ₩17,600 (₩352/ml) | Jul 2026 |
| YesStyle (PA++++) | ≈ $10.00 | Jul 2026 |
| Stylevana (PA++++) | ≈ $9.50 | Jul 2026 |
| SKIN1004 US (UV SPF50) | $15.20 sale / $19 | Jul 2026 |
| Ulta (UV SPF50) | $26 | Jul 2026 |
Sources
- 1.Official product page (KR/global SPF50+ PA++++) · SKIN1004Official current 50ml variant 43555488923894: claims, price, and INCI for the PA++++ formula. The Twin Pack variant is outside this audit.
- 2.Official product page (US Sun Serum UV SPF50) · SKIN1004US actives/inactives, reformulation language, and price.
- 3.INCIDecoder · INCIDecoderThird-party INCI + UV-filter cross-check for the PA++++ formula.
- 4.Olive Young Korea (50ml) · Olive YoungKR retail price and per-ml math for the PA++++ formula.
- 5.Fake vs real guidance · SKIN1004 (official)The brand acknowledges counterfeit risk for this exact product.
Evidence status
verified Jul 8, 2026Source-backed version audit
INCI, filter systems, sizes, and multi-channel pricing are verified against official + retailer pages for both versions; the SPF certificate is secondary-only, and KBR's own cast/wear photos are pending.
Still pending
- No brand-pinned SPF lab certificate (secondary KDRI figures only)
- Deep-tone cast unsettled — no KBR tone strips yet
- No KBR purchase receipt or wear diary
- US import channel/price for the PA++++ formula shifts
Review changelog
- Jul 8, 2026First published as a source-backed version audit — documented the KR/global PA++++ vs US 'Sun Serum UV SPF50' formula split, both filter systems, multi-channel pricing, embedded watch-verified creator reviews, and the counterfeit/fake-check note.
Frequently asked
Is the Ulta version the same as the Korean one?
No. Ulta (and Olive Young US) sell “Sun Serum UV SPF50,” a US reformulation with older US filters (Avobenzone, Homosalate, Octisalate, Octocrylene). The KR/global tube is SPF50+ PA++++ with a modern filter set, sold at YesStyle / Stylevana / Olive Young Korea.
Is it good for deeper skin tones?
Mixed. Light-to-medium reports lean no-cast, but deep-tone evidence splits and the MBBT filter can contribute a cast. KBR hasn't shot its own tone strips, so we don't yet claim “no cast on all tones.”
Is it water-resistant?
Reviewers consistently treat it as a daily/indoor SPF, not sweat- or water-resistant. Use a dedicated water-resistant sunscreen for beach or sport.
Has the SPF been independently verified?
Not that KBR could pin. Secondary sources cite KDRI figures (~SPF 50.5), but there's no brand-pinned certificate or independent re-test we found — so treat the exact SPF as unconfirmed.
