SKIN1004 Hyalu-Cica Water-Fit Sun Serum UV: expiry date and ingredients
SKIN1004 Hyalu-Cica Water-Fit Sun Serum UV lists 35 ingredients; Butyl Methoxydibenzoylmethane is at position 1.
Ingredient list from the US version (source checked 2026-10-29).
A watery, serum-textured SPF 50 broad-spectrum sunscreen said to hydrate with hyaluronic acid and centella while leaving no white cast.
Manufacture date and shelf life
Can I tell when my SKIN1004 Hyalu-Cica Water-Fit Sun Serum UV was made from its batch code?
You do not need to. Korean cosmetics print the expiry date (or the manufacture date plus a period-after-opening) on the pack, for example EXP20270701 or MFD20240701.
How long does SKIN1004 Hyalu-Cica Water-Fit Sun Serum UV last unopened?
SKIN1004 does not publish an unopened shelf life that could be verified (checked October 2026). Go by the date printed on the pack.
How long can I use it after opening?
Look for the open-jar symbol on the pack (for example 12M = 12 months after opening). The period-after-opening calculator gives the exact date.
What it targets
Based on which ingredients are in it, how high up the list they are, and whether they are key actives.
Key ingredients
UVA filter (avobenzone); needs stabilisers to stay effective in sunlight.
UVB filter; the EU lowered its limit to 7.34% (face products).
UVB filter (octisalate).
UVB filter that also stabilises avobenzone.
Provitamin B5. Soothes, hydrates and supports barrier repair.
Ingredient guide →Cica: soothing botanical, a K-beauty staple.
Ingredient guide →Small fragments of hyaluronic acid for light, layered hydration.
Ingredient guide →Worth knowing
Nothing in particular stood out.
What most of it is made of
- Butyl MethoxydibenzoylmethaneUV filter2.7%
- HomosalateUV filter13.6%
- Ethylhexyl SalicylateUV filter4.5%
- OctocryleneUV filter9%
- WaterBase
No marker ingredient (such as phenoxyethanol) was found to place the 1% line.
Full ingredient list, decoded (35)
| 1 | Butyl Methoxydibenzoylmethane 2.7%부틸메톡시디벤조일메탄UVA filter (avobenzone); needs stabilisers to stay effective in sunlight.Also found in 79 products | UV filter |
| 2 | Homosalate 13.6%호모살레이트UVB filter; the EU lowered its limit to 7.34% (face products). | UV filter |
| 3 | Ethylhexyl Salicylate 4.5%에칠헥실살리실레이트UVB filter (octisalate).Also found in 47 products | UV filter |
| 4 | Octocrylene 9%옥토크릴렌UVB filter that also stabilises avobenzone. | UV filter |
| 5 | Water정제수The base of most creams and toners; dissolves the water-loving ingredients. | Base |
| 6 | Butyloctyl Salicylate부틸옥틸살리실레이트Emollient that softens skin and helps the formula spread.Also found in 2 products | Emollient |
| 7 | Propanediol프로판다이올Humectant and solvent, often plant-derived; also boosts preservation.Also found in 101 products
| Humectant |
| 8 | Polymethylsilsesquioxane폴리메틸실세스퀴옥세인Silicone that gives a smooth, silky finish.Also found in 13 products
| Silicone |
| 9 | C20-22 Alkyl PhosphateC20-22알킬포스페이트Emulsifier or solubiliser that keeps oil and water mixed. | Emulsifier |
| 10 | C20-22 AlcoholsC20-22알코올Emulsifier or solubiliser that keeps oil and water mixed. | Emulsifier |
| 11 | Panthenol판테놀Provitamin B5. Soothes, hydrates and supports barrier repair.Ingredient guide → | Soothing |
| 12 | 1,2-Hexanediol1,2-헥산다이올Humectant that also helps preserve the formula; very common in Korean skincare. | Humectant |
| 13 | Caprylyl Methicone카프릴릴메티콘Silicone that gives a smooth, silky finish.Also found in 10 products | Silicone |
| 14 | Pentylene Glycol펜틸렌글라이콜Humectant with mild antimicrobial action, used to cut down on classic preservatives. | Humectant |
| 15 | Dimethicone/Vinyl Dimethicone Crosspolymer다이메티콘/비닐다이메티콘크로스폴리머Silicone gel that blurs and gives a velvety feel. | Silicone |
| 16 | Cetyl Alcohol세틸알코올Fatty alcohol that thickens and softens; not drying like ethanol. | Fatty alcohol |
| 17 | Vp/Eicosene Copolymer브이피/에이코신코폴리머Thickener, film-former or powder that sets the texture and finish. | Thickener / texture |
| 18 | Glyceryl Stearate글리세릴스테아레이트Emulsifier that keeps oil and water mixed.Also found in 55 products | Emulsifier |
| 19 | Tromethamine트로메타민pH adjuster.Also found in 40 products | pH adjuster |
| 20 | Polyacrylate Crosspolymer-6폴리아크릴레이트크로스폴리머-6Thickener, film-former or powder that sets the texture and finish. | Thickener / texture |
| 21 | Ammonium Acryloyldimethyltaurate/VP Copolymer암모늄아크릴로일다이메틸타우레이트/브이피코폴리머Thickener that gives a light gel-cream texture. | Thickener / texture |
| 22 | Silica실리카Absorbs oil and gives a matte, soft-focus finish. | Thickener / texture |
| 23 | Butylene Glycol부틸렌글라이콜Light humectant and solvent that helps other ingredients spread and absorb. | Humectant |
| 24 | Centella Asiatica Extract병풀추출물Cica: soothing botanical, a K-beauty staple.Ingredient guide → | Soothing |
| 25 | Ethylhexylglycerin에틸헥실글리세린Preservative booster, usually paired with phenoxyethanol. | Preservative |
| 26 | Hydrolyzed Sodium Hyaluronate하이드롤라이즈드소듐하이알루로네이트Small fragments of hyaluronic acid for light, layered hydration.Ingredient guide →Also found in 12 products
| Humectant |
| 27 | Sodium Hyaluronate소듐하이알루로네이트The salt form of hyaluronic acid; the version most products actually use.Ingredient guide → | Humectant |
| 28 | Tocopherol토코페롤Vitamin E. Antioxidant that also protects oils in the formula from going rancid. | Antioxidant |
| 29 | Glycerin글리세린A classic humectant that draws water into the outer skin layer. Well tolerated by almost everyone. | Humectant |
| 30 | Portulaca Oleracea Extract쇠비름추출물Purslane extract, used for soothing. | Soothing |
| 31 | Camellia Sinensis Leaf Extract녹차추출물Green tea extract: antioxidant and soothing. | Plant extract |
| 32 | Hyaluronic Acid하이알루로닉애씨드Holds many times its weight in water; plumps the surface layer with moisture.Ingredient guide → | Humectant |
| 33 | Oryza Sativa (Rice) Extract (30%)쌀추출물Plant extract, usually present in small amounts for conditioning. | Plant extract |
| 34 | Avena Sativa (Oat) Meal Extract귀리가루추출물Soothing ingredient. | Soothing |
| 35 | Glycine Max (Soybean) Seed Extract | Not in the ingredient dictionary yet |
Products with a similar ingredient list
Shared ingredients only — this doesn’t mean the same effect or a substitute. Amounts and textures can differ. Very common ingredients (water, glycerin and the like) are not counted.
General information, not medical advice.
Formulas change and can differ by country, so check the list on your pack too.