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cosphera Vitamin C Performance Serum

cosphera Cosphera Vitamin C Performance Serum lists 15 ingredients on its label, 15 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.

  1. Aqua
  2. Pentylene Glycol
  3. Glycerin
  4. 3-O-Ethyl Ascorbic Acid
  5. Ascorbyl Glucoside
  6. Propanediol
  7. Bioflavonoids
  8. Xylitylglucoside
  9. Anhydroxylitol
  10. Xylitol
  11. Sodium Hyaluronate
  12. Xanthan Gum
  13. Acetyl Glucosamine
  14. Calcium Pantothenate
  15. Sodium Hydroxide

Highlights

Free of alcoholFree of fragranceFree of parabensFree of siliconesFree of sulfatesFree of mineral oilFree of essential oilsFree of formaldehyde releasers

Key ingredients

SOLVENT
AquaPropanediol
SKIN CONDITIONING
Pentylene Glycol3-O-Ethyl Ascorbic AcidBioflavonoids
DENATURANT
Glycerin
ANTIOXIDANT
Ascorbyl Glucoside
HUMECTANT
Xylitylglucoside

Other ingredients

AnhydroxylitolXylitolSodium HyaluronateXanthan GumAcetyl GlucosamineCalcium PantothenateSodium Hydroxide

Skim through

IngredientWhat it doesIrr. · Com.Rating
AquaSOLVENT0 · 0Green
Pentylene GlycolSKIN CONDITIONING, SOLVENT0 · 0Green
GlycerinDENATURANT, HAIR CONDITIONING, HUMECTANT, ORAL CARE, SKIN PROTECTING, SOLVENT, VISCOSITY CONTROLLING, PERFUMING, FRAGRANCE, SKIN CONDITIONING - HUMECTANT0 · 0Green
3-O-Ethyl Ascorbic AcidSKIN CONDITIONING0 · –Green
Ascorbyl GlucosideANTIOXIDANT0 · 0Green
PropanediolSOLVENT, VISCOSITY CONTROLLING0 · 0Green
BioflavonoidsSKIN CONDITIONING, SOOTHING0 · –Green
XylitylglucosideHUMECTANT, SKIN CONDITIONING0 · 0Green
AnhydroxylitolHUMECTANT, SKIN CONDITIONING0 · 0Green
XylitolANTI-SEBORRHEIC, DEODORANT, HUMECTANT, FLAVOURING, SKIN CONDITIONING - HUMECTANT0 · 0Green
Sodium HyaluronateHUMECTANT, SKIN CONDITIONING0 · 0Green
Xanthan GumBINDING, SURFACTANT - EMULSIFYING, EMULSION STABILISING, GEL FORMING, SKIN CONDITIONING, SURFACTANT - CLEANSING, VISCOSITY CONTROLLING0 · 0Green
Acetyl GlucosamineSKIN CONDITIONING0 · 0Green
Calcium PantothenateHAIR CONDITIONING, SKIN CONDITIONING - MISCELLANEOUS0 · 0Green
Sodium HydroxideBUFFERING, DENATURANT · 限制 III/15a3 · –Green

Ingredients explained

Aqua
Solvent, main base; microbial control is critical
Pentylene Glycol
Polyol humectant at 1-3%; low irritancy, suitable for sensitive skin
Glycerin
Workhorse humectant at 3–10%; tacky at high levels, pair with occlusives
3-O-Ethyl Ascorbic Acid
Water-soluble Vitamin C derivative; more stable than ascorbic acid, sensitive to metals and alkali.
Ascorbyl Glucoside
Stable Vitamin C derivative, antioxidant; more stable than pure ascorbic acid, releases activity slowly in neutral/basic conditions.
Propanediol
Polyol solvent at 1–5%; light feel, aids solubilization, propylene glycol alternative
Bioflavonoids
Plant antioxidant blend for soothing and skin protection
Xylitylglucoside
Polyol humectant with high water absorption and fresh feel; often co-used with propylene glycol for enhanced hydration.
Anhydroxylitol
Anhydrous xylitol, potent humectant; high hygroscopicity may cause stickiness at high levels.
Xylitol
Polyol humectant, sweet taste; water-soluble, high hygroscopy, excess draws moisture.
Sodium Hyaluronate
Potent humectant at 0.1–2%; different MW for penetration depth, high levels may draw moisture
Xanthan Gum
Natural thickener at 0.1–1%; provides gel texture, pH-stable, requires full hydration
Acetyl Glucosamine
Glycosaminoglycan precursor supporting skin hydration and elasticity; highly biocompatible.
Calcium Pantothenate
Pro-vitamin B5 for hair/skin conditioning; water-soluble, used in conditioners
Sodium Hydroxide
Strong base neutralizer for pH adjustment; handle with extreme care

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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