Compare Products: 10% Pure Vitamin C Anti-Aging Face Serum vs C.E.O. 15% Vitamin C Brightening Serum

Who It's Designed For

La Roche-Posay
  • Those who trust dermatologist-recommended brands
  • Users with oily or combination skin who benefit from salicylic acid
  • People seeking a moderate vitamin C concentration (10% vs. 15-20%)
  • Those who want hyaluronic acid hydration alongside vitamin C
  • Users looking for a multi-active anti-aging serum
Sunday Riley
  • Those who want a stable vitamin C that will not oxidize or change color
  • Users who find L-ascorbic acid serums too irritating or acidic
  • People who enjoy a citrus-scented skincare experience
  • Those seeking a vitamin C serum that does not require refrigeration
  • Users looking for a luxurious texture that layers well under makeup

Key Ingredients

La Roche-Posay

10% Ascorbic Acid (L-Ascorbic Acid), Sodium Hyaluronate, Hydrolyzed Hyaluronic Acid, Salicylic Acid, Neurosensine (Diacetyl Dipeptide-1 Cetyl Esters)

Sunday Riley

15% Tetrahexyldecyl Ascorbate (THD Ascorbate), Squalane, Glycolic Acid, Tocopherol (Vitamin E), Saccharide Isomerate

Product Composition

13% similarity (6 ingredients in common)

Shared Ingredients
aqua/waterglycerinsodium hyaluronatedisodium edtacaprylyl glycoltocopherol
Only in La Roche-Posay (22)
ascorbic acidcyclohexasiloxanealcohol denat.potassium hydroxidepolymethylsilsesquioxanepolysilicone-11dimethiconepropylene glycolpentaerythrityl tetraethylhexanoatec13-14 isoparaffinpeg-20 methyl glucose sesquistearateadenosinepoloxamer 338ammonium polyacryloyldimethyl tauratehydrolyzed hyaluronic acidlaureth-7diacetyl dipeptide-1 cetyl estersxanthan gumtoluene sulfonic acidpolyacrylamidesalicylic acidparfum/fragrance
Only in Sunday Riley (20)
tetrahexyldecyl ascorbatesqualanepolyglyceryl-6 distearatepeg-8 beeswaxlimonenecitrus sinensis (sweet orange) oilcitrus tangerina peel oilglycine soja sterolsppg-12/smdi copolymerhydrogenated polydecenephenoxyethanolacetamidoethoxyethanoljojoba estersglycolic acidcitrus aurantium dulcis (sweet orange) oilchlorphenesincera albaisosqualanec30 hydrocarbonssaccharide isomerate

User Feedback Patterns

La Roche-Posay
Smooth, elegant texture

Users praise the lightweight, quick-absorbing texture. The silicone base and alcohol give it a matte, non-sticky finish that layers well under makeup.

Alcohol causes dryness for some

Users with dry or sensitive skin report dryness and irritation, likely from the denatured alcohol. This is the most common negative feedback.

Effective brightening

Users who tolerate the formula report visible brightening and improved skin tone within 3-4 weeks. The 10% concentration works well for most.

Oxidation over time

Like all L-ascorbic acid serums, users report color change within weeks. Some note it darkens faster than competitors.

Sunday Riley
Luxurious texture

Users consistently praise the lightweight oily texture that absorbs well and sits beautifully under makeup. The application experience is rated higher than most L-ascorbic acid serums.

Pleasant citrus scent

The orange scent is frequently mentioned as a positive. Users who enjoy scented skincare rate this highly. However, fragrance-sensitive users avoid it.

No oxidation concerns

Users appreciate that the golden color remains consistent throughout the product's life. No anxiety about darkening or wasting product due to oxidation.

Gradual brightening results

Brightening results are described as gradual but visible over 4-8 weeks. Some users expecting the immediate 'glow' of L-ascorbic acid find the results slower.

Which Should You Buy?

La Roche-Posay 10% Pure Vitamin C Anti-Aging Face Serum offers great value at a lower price point. Sunday Riley C.E.O. 15% Vitamin C Brightening Serum may be worth the premium if you want 15% Tetrahexyldecyl Ascorbate (THD Ascorbate).

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