20% Vitamin C + Advanced Brightening Serum

About this product

Product description

The serum comes bottled in two parts: There’s a pure 20% L-ascorbic acid powder. And there’s a carefully formulated serum activator that contains soothing, hydrating ingredients along with additional antioxidants. On the hydrating front, you have three different molecular weights of humectant hyaluronic acid to target different layers of the skin. And on the antioxidant front, you have soothing ectoin working synergistically with ferulic acid to help neutralize free radical damage from UV rays and environmental stressors to protect against signs of premature aging. The amino acid derivative ectoin is an extremolyte (meaning it helps protect cells that exist in extreme conditions). In addition to its antioxidant benefits, it also soothes, supports the skin’s barrier function, and helps prevent transepidermal water loss. We included it in this formula to complement the effects of the vitamin C, which can sometimes be sensitizing. We wanted to create a formula that would be calming and gentle enough for all skin types—without sacrificing an ounce of protective antioxidant power.

Description from The Detox Market selective skincare · Recorded Aug 9, 2026. Product claims have not been independently verified.

Listed in label order. Position does not establish an exact concentration. Ingredient roles describe possible uses and can vary with the finished formula.

Explore the ingredients

1. 01
   Aqua/Water/Eau ↗Solvent
2. 02
   Ascorbic Acid ↗Antioxidant · Tyrosinase inhibitor / brightening · Buffering · Masking · Skin conditioning
3. 03
   Glycerin ↗Humectant · Denaturant · Hair conditioning · Oral care · Perfuming · Skin protecting · Viscosity controlling
4. 04
   Dimethyl Isosorbide ↗Viscosity controlling · Solvent
5. 05
   Pentylene Glycol ↗Skin conditioning · Solvent
6. 06
   Ectoin ↗Humectant · Anti-inflammatory · Skin conditioning
7. 07
   Propanediol ↗Viscosity controlling · Solvent
8. 08
   Ferulic Acid ↗Antioxidant · Antimicrobial
9. 09
   Sodium Hyaluronate ↗Humectant · Skin conditioning
10. 10
    Terminalia Ferdinandiana (Kakadu Plum) Fruit Extract ↗Antioxidant · Bleaching
11. 11
    Galactoarabinan ↗Humectant · Film forming
12. 12
    Sodium Citrate ↗Buffering · Chelating · Masking
13. 13
    Ziziphus Jujuba (Jujube) Seed Extract ↗Skin conditioning
14. 14
    Fructan ↗Skin conditioning
15. 15
    Ethylhexylglycerin ↗Deodorant · Skin conditioning
16. 16
    Potassium Sorbate ↗Preservative
17. 17
    Decyl Glucoside ↗Cleansing · Emulsion stabilising · Surfactant
18. 18
    Olea Europaea (Olive) Leaf Extract ↗
19. 19
    Sodium Hydroxide ↗Buffering · Denaturant
20. 20
    Citric Acid ↗AHA exfoliant · Buffering · Chelating · Masking
21. 21
    Phenethyl Alcohol ↗Masking
22. 22
    Xylitol ↗Humectant · Skin conditioning
23. 23
    Caprylic Acid ↗Cleansing · Emulsifying · Masking · Perfuming · Surfactant
24. 24
    Caprylyl Glycol ↗Humectant · Emollient · Hair conditioning · Skin conditioning

Formula provenance

Retailer source · united-states

Recorded Aug 11, 2026

Formula source ↗

Formulas can vary by market and change over time. Check the ingredient list on your own pack.

The connection atlas

Open explorer

Goop Beauty20% Vitamin C + Advanced Brightening SerumIngredientAscorbic AcidIngredientGlycerinIngredientEctoinIngredientFerulic AcidIngredientSodium HyaluronateIngredientGalactoarabinan

Select a node. See what connects.

1 / 4

Follow the connections

Ingredient research

These studies concern ingredients listed or declared for this product. They do not establish that this exact formula reproduces a study result, dose or delivery method.

Where to find it

Check price, stock and delivery with the retailer. These links are not a live availability check.

• Visit The Detox Market ↗

  Availability and price are a dated retailer snapshot; verify on the retailer site.

Catalogue sources

• The Detox Market selective skincare ↗

  Product identity, descriptions, imagery, price and availability remain attributable to The Detox Market selective skincare.