hanasui Serum Vit C
hanasui Hanasui Serum Vit C lists 12 ingredients on its label, 11 decoded. See what each one does, its irritancy and comedogenic tendency, and its status in national inventories.
Ingredients overview
Label order. Colour is our internal rating: green routine, yellow restricted or worth a look, red prohibited or high-risk, grey not yet decoded.
Ingredients are listed in label order; the order reflects the label only, not exact concentrations.
Highlights
Free of alcoholFree of parabensFree of siliconesFree of sulfatesFree of mineral oilFree of essential oilsContains animal-derivedContains formaldehyde releasersContains EU-26 allergensContains fragrance
Key ingredients
- ANTIPLAQUE
- Water
- DENATURANT
- Glycerin
- HUMECTANT
- Propylene Glycol
- HAIR CONDITIONING
- Collagen
- ANTI-SEBORRHEIC
- Sodium Phosphate
- BINDING
- Hydroxyethylcellulose
- PRESERVATIVE · 限制 V
- Dmdm Hydantoin
- SKIN CONDITIONING - EMOLLIENT
- Hydrogenated Castor Oil
Other ingredients
Skim through
| Ingredient | What it does | Irr. · Com. | Rating |
|---|---|---|---|
| Water | ANTIPLAQUE, SKIN CONDITIONING, SOLVENT | 0 · 0 | Green |
| Glycerin | DENATURANT, HAIR CONDITIONING, HUMECTANT, ORAL CARE, SKIN PROTECTING, SOLVENT, VISCOSITY CONTROLLING, PERFUMING, FRAGRANCE, SKIN CONDITIONING - HUMECTANT | 0 · 0 | Green |
| Propylene Glycol | HUMECTANT, FRAGRANCE, SOLVENT, VISCOSITY CONTROLLING, SKIN CONDITIONING - HUMECTANT, SKIN CONDITIONING - MISCELLANEOUS | 1 · 0 | Green |
| Collagen | HAIR CONDITIONING, MOISTURISING, SKIN CONDITIONING | 0 · 0 | Green |
| Sodium Phosphate | ANTI-SEBORRHEIC, BUFFERING, DEODORANT | 2 · – | Green |
| Hydroxyethylcellulose | BINDING, EMULSION STABILISING, FILM FORMING, LIGHT STABILIZER, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Dmdm Hydantoin | PRESERVATIVE · 限制 V/33 | 2 · – | Yellow |
| PEG-40 | Not decoded yet | — | — |
| Hydrogenated Castor Oil | SKIN CONDITIONING - EMOLLIENT, SURFACTANT - EMULSIFYING, SKIN CONDITIONING, SURFACTANT - CLEANSING, VISCOSITY CONTROLLING | 0 · 0 | Green |
| Allantoin | SKIN CONDITIONING, SKIN PROTECTING, SOOTHING | 0 · 0 | Green |
| Tetrasodium EDTA | CHELATING | 0 · 0 | Green |
| Perfume | 香精, 香氛 | 1 · – | Green |
Ingredients explained
- Water
- Primary solvent and base; requires preservative system to prevent microbial growth
- Glycerin
- Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives
- Propylene Glycol
- Polyol humectant at 3-10%; hygroscopic, slight tackiness, mild irritation at high conc., verify preservative efficacy, no allergen.
- Collagen
- Hydrating conditioning agent; soluble protein used in hair care and toners; forms occlusive layer.
- Sodium Phosphate
- Phosphate buffer and anti-seborrheic; pH regulator, aids sebum control, high levels are irritating
- Hydroxyethylcellulose
- Water-soluble cellulose ether for thickening and suspension stabilization; sensitive to ions, electrolytes reduce viscosity, use at pH 7-8.
- Dmdm Hydantoin
- Formaldehyde-releasing preservative (V/33 limit); monitor cumulative formaldehyde with fragrances.
- PEG-40
- Not decoded yet
- Hydrogenated Castor Oil
- Hydrogenated castor oil for emollient, emulsifying, mild cleansing; ensure high purity
- Allantoin
- Skin soother at 0.5-2%; promotes cell regeneration
- Tetrasodium EDTA
- Chelator removing metal ions to enhance antioxidant and preservative efficacy; very low usage, typically 0.05-0.1%, no direct skincare function.
- Perfume
- Perfume/Fragrance blend. Opaque composition, a leading cause of contact dermatitis. Must list specific EU 26 allergens if present. Patch test required.
Source: full ingredient list published on the product label, collected 2026-09-19. Ratings are our internal reading, not a regulatory conclusion. · Product page
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