Sunday Riley C.E.O. Vitamin C Brightening Serum — 15% THD Ascorbate 1.7oz, fast-absorbing lightweight

Sunday Riley C.E.O. 15% Vitamin C Brightening Serum is a lightweight, fast-absorbing antioxidant serum that delivers an ultra-stable 15% Vitamin C (THD Ascorbate) to visibly brighten skin tone and reduce the appearance of dark spots and dullness.

This serum blends a potent oil-soluble form of Vitamin C with moisture-supporting extracts and phytosterols for a radiant, smoother-looking complexion without heavy residue or irritation. Formulated to sink in quickly, it targets uneven tone, surface dullness, and signs of early aging while supporting the skin’s moisture barrier. The formula is free from common irritants and backed by Sunday Riley’s clean, cruelty-free standards.

How quickly will I notice brighter skin?

Many users see an immediate luminous finish from the serum’s light-reflecting and hydrating ingredients, with more measurable improvement in dark spots and overall tone developing over several weeks of consistent use. Results vary by skin type and prior complexion concerns.

• Contains 15% THD Ascorbate, a stable, oil-soluble Vitamin C form for deeper absorption.
• Instant brightness from hydrating humectants and light-diffusing elements.
• Visible tone improvement typically after multiple weeks of daily use.

How should I use this serum in my skincare routine?

Apply once or twice daily after cleansing and toning, before heavier creams or oils. Use a few drops over face and neck, gently pressing the product into skin; follow with SPF in the morning to protect enhanced radiance from sun exposure.

• Morning: cleanser → serum → moisturizer → broad-spectrum SPF.
• Evening: cleanser → serum → treatment creams or oils as needed.
• Start slowly if you have sensitive skin; increase frequency as tolerated.

Is this serum suitable for sensitive skin?

The formula includes phytosterols and saccharide isomerate to support the moisture barrier and soothe skin sensitivity, while being free of fragrance and common irritants. However, because it contains a concentrated Vitamin C derivative, patch testing is recommended for very reactive skin.

• Fragrance-free and formulated without parabens, sulfates, gluten, soy, phthalates.
• Phytosterols help reduce the appearance of sensitivity.
• Patch test on the inner forearm before full-face application.

What visible benefits can I expect beyond brightness?

Besides improved radiance and reduced-looking dark spots, this serum supports firmer-looking skin, smoother texture, and minimized appearance of pores thanks to hydrating and skin-replenishing ingredients. Over time, skin can appear plumper and more even-toned.

• Targets dullness, discoloration, and early signs of loss of firmness.
• Saccharide isomerate helps reinforce moisture barrier and smooth texture.
• Lightweight finish layers well under makeup and sunscreen.

Who is this for: Ideal for anyone seeking a powerful daily brightening step—people with dull or uneven complexions, early discoloration, or those wanting a non-greasy Vitamin C serum that layers easily. It suits normal to combination skin well; those with very sensitive or compromised skin should introduce it gradually and perform a patch test. Sunday Riley’s clean, cruelty-free positioning also makes it a fit for shoppers prioritizing thoughtful ingredient standards.

Ingredients

INGREDIENTS: Water/Eau/Aqua, Tetrahexyldecyl Ascorbate, Squalane, Polyglyceryl-6 Distearate, PEG-8 Beeswax, PPG-12/SMDI Copolymer, Glycine Soja (Soybean) Sterols, Sodium Phytate, Tocopherol, Acetamidoethoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Jojoba Esters, Glycolic Acid, Caprylyl Glycol, Cetyl Alcohol, Polyglyceryl-3 Beeswax, Chlorphenesin, Glycerin, Polysorbate 60, Sorbitan Isostearate, Saccharide Isomerate, Citrus Aurantium Dulcis (Orange) Peel Oil, Citrus Tangerina (Tangerine) Peel Oil, Linalool, Limonene, Phenoxyethanol.