Sunday Riley C.E.O. 15% Vitamin C Brightening Serum — Orange 1.0 fl oz, Fast-Absorbing Antioxidant

Sunday Riley C.E.O. 15% Vitamin C Brightening Serum is a fast-absorbing, antioxidant-rich serum formulated to visibly brighten dull skin, reduce the appearance of dark spots, and restore a more even-looking tone.

This lightweight, orange-hued serum delivers a stable 15% THD ascorbate (a form of Vitamin C) alongside a phytosterol complex to support radiance while minimizing irritation. Designed for daily use, the formula blends proven actives with botanical balancing agents from a B Corp–certified, clean and cruelty-free brand. The texture absorbs quickly, layering well under moisturizers and makeup for a brighter-looking complexion without heavy residue.

How does this serum brighten skin and help with dark spots?

The serum uses 15% THD ascorbate, a potent, stable derivative of Vitamin C, which targets discoloration and dullness. It works as an antioxidant to help improve the look of uneven tone and promote a refreshed surface appearance when used consistently.

• 15% THD ascorbate for visible brightening and antioxidant protection
• Phytosterols complex to soothe redness and reduce sensitivity
• Fast-absorbing texture that layers under other skincare and makeup
• Recommended for daily morning or evening application depending on tolerance

Is the formula suitable for sensitive or reactive skin types?

The product pairs a high-potency Vitamin C with phytosterols isolated from soybeans to help temper irritation and calm visible redness. While it’s formulated to be balancing, those with very reactive skin should patch-test first or introduce it slowly.

• Includes soothing phytosterols to help reduce visible sensitivity
• Clean, cruelty-free formulation from a B Corp brand
• Start with every-other-day use if you have reactive skin
• Follow with sunscreen in the morning to protect treated skin

How do I use the C.E.O. 15% Vitamin C Brightening Serum in my routine?

Apply a few drops to clean, dry skin after cleansing and before moisturizer; allow it to absorb fully. Use once daily in the morning for antioxidant protection, or at night if preferred, and always pair with SPF when used during daytime.

• Dispense 2–3 drops onto fingertips or palm per use
• Pat gently across face, neck, and décolletage until absorbed
• Follow with moisturizer and daily broad-spectrum sunscreen
• Introduce gradually if combining with strong actives like retinoids or AHAs

What results and timeline can I expect from regular use?

With consistent daily use, many users notice improved radiance and a reduction in the appearance of dullness and uneven tone within several weeks. Individual results vary based on skin type, prior concerns, and complementary skincare steps.

• Improved surface radiance in a few weeks with regular application
• Visible reduction in dullness and uneven tone over continued use
• Supports overall skin clarity when combined with sun protection
• Non-irritating for many users thanks to balancing botanicals

Who is this for: This serum suits anyone seeking a potent, fast-absorbing Vitamin C treatment to brighten skin and address the appearance of dark spots and dullness. It’s formulated to work for most skin types, including those prone to mild redness, but people with very sensitive or compromised skin should patch-test and introduce it gradually. Ideal for morning use beneath sunscreen or as part of an evening brightening routine, C.E.O. 15% offers a concentrated antioxidant boost from a clean, cruelty-free brand.

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.