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The Inkey List · Serums

15% Vitamin C + EGF Serum

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15% Vitamin C + EGF Serum
Image from the brand's product page

Product

Brand:
The Inkey List
Product type:
Serums
Source page:
https://www.theinkeylist.com/products/15-vitamin-c-egf-serum
Last checked:
2026-10-30
Formula version:
Pack label · 2026-10-30
Fragrance & alcohol:
Fragrance-free · Alcohol-free
Ingredient list coverage 100% Well covered

13 ingredients on this list · WATER at number 1 · ASCORBYL GLUCOSIDE at number 2 · SODIUM HYDROXIDE at number 3

Product description

A serum pairing a 15% vitamin C derivative with EGF, marketed for brightness.

Full ingredient list

Kept exactly as the source printed it, including spelling in the original.

  1. 1 WATER
  2. 2 ASCORBYL GLUCOSIDE
  3. 3 SODIUM HYDROXIDE
  4. 4 PEG-40 HYDROGENATED CASTOR OIL
  5. 5 PHENOXYETHANOL
  6. 6 BENZYL ALCOHOL
  7. 7 BUTYLENE GLYCOL
  8. 8 XANTHAN GUM
  9. 9 ETHYLHEXYLGLYCERIN
  10. 10 SODIUM METABISULFITE
  11. 11 DEHYDROACETIC ACID
  12. 12 PHYTIC ACID
  13. 13 OLIGOPEPTIDE-1
Original label text 
Aqua (Water/Eau), Ascorbyl Glucoside, Sodium Hydroxide, PEG-40 Hydrogenated Castor Oil, Phenoxyethanol, Benzyl Alcohol, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Sodium Metabisulfite, Dehydroacetic Acid, Phytic Acid, Oligopeptide-1
Source:15% Vitamin C + EGF Serum — brand product page

Ingredient analysis

Oligopeptide-1 · Actives · BUTYLENE GLYCOL · Humectants · PHENOXYETHANOL · Preservatives

Actives

1

Ingredients added for a stated effect on the skin.

Humectants

2

Bind water and draw it into the upper layers of the skin.

Preservatives

5

Inhibit microbial growth so the product stays safe to use.

Antioxidants

2

Slow oxidation of the formula or of skin surface lipids.

Chelating agents

1

Binds metal ions to keep the formula stable.

pH adjusters

1

Bring the formula to, and hold it at, its target pH.

Texture agents

1

Set the viscosity and feel of a formula.

Solvents

2

Dissolve or carry other ingredients.

Emulsifiers

1

Keep oil and water mixed in a stable formula.

Evidence

  • Legal limits Official legal text Certainty: High Primary source

    The EU Scientific Committee on Consumer Safety concluded in 2016 that 2-phenoxyethanol is safe as a preservative at a maximum of 1.0%, which is the limit already set in Annex V/29 of the EU Cosmetics Regulation. It estimated a margin of safety of about 50 for children.

    Who it applies to: Phenoxyethanol used as a preservative in cosmetic products, at or below 1.0%.

    Study limits: The dossier behind the conclusion was submitted by Cosmetics Europe, the industry association, and the committee lowered the default toxicokinetic factor from 4.0 to 1.0 on its way to the 1.0% conclusion. The final opinion kept 1.0%.

    Source:Opinion of the Scientific Committee on Consumer Safety (SCCS) - Final version of the opinion on Phenoxyethanol in cosmetic products
  • Skin effect Human trial Certainty: Moderate Primary source

    In a double-blind, vehicle-controlled trial of 30 people with two or more solar lentigines, a serum with 10% L-ascorbic acid and 2% phytic acid lowered the pigmentation index of the treated lesions over three months while the vehicle-treated lesions stayed stable (P <= 0.003 from month 1 to month 4). Six adverse events, mostly halo depigmentation, were judged possibly related to the product.

    Who it applies to: Pigmentation index, dermoscopic pigmentation and brightness (L*) of solar lentigines over three months, with two months of follow-up.

    Study limits: The serum combines two actives. Each person applied the product to one side of the body and the vehicle to the other. 30 people, and six halo-depigmentation events were possibly related to the product. The authors call for larger studies.

    Source:A randomized controlled study to evaluate the depigmenting activity of L-ascorbic acid plus phytic acid-serum vs. placebo on solar lentigines

Related skin concerns

Skin concerns with evidence for ingredients on this list.

Sensitive skin Dark spots

Formula history

1 version of this formula on record.

Related products

Source:15% Vitamin C + EGF Serum — brand product page