Professional Facial Serum Vitamin C+ 20%
Serum

Professional Facial Serum Vitamin C+ 20%

Sylk
21Ingredients
0EU Banned
2Caution
0.5/5Comedogenic
Pregnancy Risk1 ingredient flagged
Last updated10 Dec 2025
0.5/5Comedogenic
Pregnancy Risk1 ingredient flagged
Low Allergens1 fragrance allergen
90% Natural10% synthetic

Contains Regulated Ingredients

EU Restricted Ingredients

These ingredients are permitted in the EU but subject to concentration limits, usage conditions, or mandatory labelling requirements under Annex III of the EU Cosmetics Regulation.

Alpha-Arbutin
Restricted — see EU CosIng Annex III
Citrus Aurantium Dulcis Peel Oil
Restricted — see EU CosIng Annex III
What does "EU Restricted" mean?

Restricted ingredients are not banned — they are allowed in cosmetic products as long as specific conditions are met:

  • Concentration limits — maximum allowed percentage in the final product
  • Product type restrictions — some ingredients are only allowed in rinse-off or leave-on products
  • pH restrictions — the finished product must stay within a specific pH range
  • Mandatory labelling — certain allergens must be listed on the packaging
  • Usage conditions — must not be combined with certain other ingredients

These limits are based on the EU CosIng database (Annex III) and are updated regularly. Products sold in the EU must comply with all applicable restrictions.

Ingredient Chemistry

pH

pH Efficacy

pH Efficacy

pH 5.1 — Ineffective
5.1
0Neutral 714
pH estimated from category & ingredients: 5.1
Active ingredients: Alpha-Arbutin, L-Ascorbic Acid, Ascorbyl Glucoside, Copper Tripeptide-1
Alpha-Arbutin at pH 5.1: optimal range (4–6.5)
L-Ascorbic Acid at pH 5.1: likely ineffective — above 4
Ascorbyl Glucoside at pH 5.1: optimal range (5–7)
Copper Tripeptide-1 at pH 5.1: optimal range (5–7)
L-Ascorbic Acid is at pH 5.1, which is too high for optimal efficacy (2.5–3.5).
Detected actives & ideal pH
Alpha-ArbutinpH 4–6.5
L-Ascorbic AcidpH 2.5–3.5
Ascorbyl GlucosidepH 5–7
Copper Tripeptide-1pH 5–7

Microbiome

Composition & Ethics

Product Details

Attributes

Ethics
VeganLikely
No animal-derived ingredients detected
Cruelty-FreeUnknown
No brand statement — contact manufacturer
Safety
Fragrance-FreeLikely
No fragrance ingredients detected
Key Actives
Contains Vitamin CConfirmed
Contains vitamin C derivative
Vitamin C SerumConfirmed
Hyaluronic Acid SerumConfirmed
Brightening SerumConfirmed
Confirmed Inferred Unknown Not compliant

Composition

90% natural10% synthetic
19 natural 2 synthetic

Based on 21 ingredients analyzed. 90% natural and 10% synthetic.

Active ingredients2 actives
Fragrance1 essential oil

Functions Overview (15)

skin conditioning12:Deionized Water, Hibiscus Esculentus Fruit Extract, Hamamelis Virginiana, Chrysanthemum Parthenium Extract, Camellia Sinensis Extract, Pentylene Glycol, Lecithin, Arginine... +4 more
type of chemical entity3:Alpha-Arbutin, Sodium Hyaluronate, Tocopheryl Acetate
humectant2:Butylene Glycol, Glycerin

Texture & Feel

Texture & Feel

Expected texture
Viscous, serum-like — slightly "thick water" feel
SpreadabilityEasy
AbsorptionFast
Tackiness / ResidueLight
Finish:Luminous / radiant — subtle light-reflecting glow

Slight initial tackiness that fades into a hydrated dewy finish.