Dr. Brenner Vitamin C Night Oil Serum — Tetrahexyldecyl Ascorbate 1 oz, Squalane & Rose Oil

Dr. Brenner Vitamin C Serum is an oil-soluble nighttime treatment combining tetrahexyldecyl ascorbate, plant-derived squalane, and pure rose oil to brighten, firm, and hydrate skin while minimizing irritation.

This concentrated 1 fl oz night oil blends a stable vitamin C derivative with lightweight squalane and nourishing rose oil to target uneven tone, the look of fine lines, and dullness. Designed as a nighttime booster, the formula avoids the common instability of water-based vitamin C serums and works with skin’s natural lipids to deliver active ingredients more effectively. It’s vegan, cruelty-free, and formulated in the USA for those seeking a potent but gentle vitamin C treatment in an oil base.

How does this serum brighten dark spots and discoloration?

The serum uses tetrahexyldecyl ascorbate, an oil-soluble form of vitamin C that penetrates the lipid layers of skin to support a more even-looking complexion. Because it’s formulated in an oil base, the active ingredient remains more stable and less prone to oxidation than many water-based vitamin C products. Regular nightly use can help reduce the visual prominence of post-acne marks and sun-related pigmentation over time.

• Contains tetrahexyldecyl ascorbate, a stable, oil-soluble vitamin C derivative
• Oil delivery improves ingredient penetration into skin’s lipid barrier
• Formulated to resist oxidation for longer shelf life and efficacy
• Targets dark spots and uneven tone without harsh exfoliants

Will this serum help improve skin firmness and fine lines?

Vitamin C supports skin’s structural proteins and can help the skin appear firmer and more resilient with continued use. The lightweight squalane contributes immediate smoothing and long-lasting hydration that plumps the look of fine lines, while rose oil adds antioxidant support to help protect the skin surface. The combined effect is improved texture and a more lifted appearance over time.

• Squalane mimics natural skin oils to lock in moisture and smooth texture
• Vitamin C derivative supports collagen-related appearance
• Rose oil soothes redness and provides antioxidant benefits
• Nighttime application supports overnight repair and renewal processes

How should I incorporate this night oil into my routine?

Use the serum in the evening after cleansing and any water-based serums, but before heavier creams if needed. A few drops are typically sufficient—gently press into face and neck until absorbed. Because it’s oil-soluble and formulated for night use, you can pair it with hydrating lotions or thicker occlusives as needed for extra moisture.

• Apply 2–4 drops to clean, dry skin each night
• Layer after lightweight serums; before creams if desired
• Suitable to use with most non-acid exfoliants; patch-test with retinoids
• Store away from direct light to preserve stability

Is this product suitable for sensitive or acne-prone skin?

The oil-soluble vitamin C and soothing rose oil are designed to reduce the irritation sometimes caused by high-potency water-based vitamin C formulas. Squalane provides non-comedogenic hydration that won’t overly weigh down skin. Still, sensitive or acne-prone users should patch-test first and introduce the oil gradually.

• Formulated without known animal-derived ingredients (vegan)
• Squalane provides lightweight, non-clogging hydration
• Rose oil calms redness and supports gentle antioxidant protection
• Patch testing recommended for very reactive skin

Who is this for: This night oil is aimed at anyone seeking a stable, high-performance vitamin C treatment that works with the skin’s natural oils—especially those wanting to address dark spots, dullness, and early signs of aging without the irritation some acidic, water-based serums cause. It’s also a fit for users who prefer vegan, cruelty-free skincare formulated in the USA and who want a multitasking oil to boost hydration and surface radiance overnight.

Ingredients

Squalane, Pistacia Lentiscus (Mastic) Gum, Rosa Damascena Flower Extract, Tetrahexyldecyl Ascorbate, Caprylic/Capric Triglyceride, Geraniol.