Vitamin C Oil Serum

Vitamin C Brightening Oil Serum – Deeply Penetrating, Gentle & Peptide-Powered

Advanced Formula for Radiant, Youthful Skin

Elevate your skincare routine with St. Croix Products’ Vitamin C Brightening Serum, engineered for those seeking brighter, smoother, and more youthful-looking skin. Unlike standard Vitamin C serums that lose potency or sit on the surface, our advanced formula penetrates deeper layers of skin to deliver results where they matter most.

The Power of Tetrahexyldecyl Ascorbate (Vitamin C)

Our serum uses Tetrahexyldecyl Ascorbate (THD Ascorbate), a highly stable, oil-soluble form of Vitamin C that outperforms traditional ascorbic acid:

• Deep Absorption: Penetrates the skin barrier more effectively than water-based Vitamin C.

• Brightens & Evens Tone: Targets discoloration, dullness, and sun damage.

• Antioxidant Protection: Defends against free radicals and environmental stress.

• Gentle on Skin: Less irritating than standard Vitamin C, making it suitable for sensitive or aging skin.

Infused with Matrixyl 3000 – Proven Peptide Technology

What truly sets this serum apart is the inclusion of Matrixyl 3000, a clinically proven peptide complex. This powerhouse peptide duo (Palmitoyl Tripeptide-1 and Palmitoyl Tetrapeptide-7) works beneath the surface to:

• Stimulate collagen and elastin production.

• Smooth fine lines and reduce wrinkle depth.

• Improve firmness and elasticity over time.

Few Vitamin C serums feature Matrixyl 3000, making this a unique, science-backed formula for long-term results.

Hydration & Nourishment with Squalane + Rosehip Oil

To counteract age-related dryness, our serum is enriched with Squalane and Rosehip Seed Oil, both known for their skin-replenishing properties:

• Squalane: Mimics skin’s natural oils, providing lightweight hydration and barrier support.

• Rosehip Oil: Packed with omega fatty acids and antioxidants to restore moisture and improve skin tone.

• Hyaluronic Acid: Added to boost hydration and deliver a plump, dewy glow.

Together, these ingredients ensure your skin feels soft, supple, and radiant all day long.

How to Use

1. Apply 2–3 drops to clean, dry skin.

2. Gently massage into face and neck until fully absorbed.

3. Follow with your favorite moisturizer or sunscreen (AM).

4. Safe for daily AM and PM use.

Tip: Ideal for layering with peptides, hydrating serums, or anti-aging treatments.

Why This Serum Outperforms Others

• Anhydrous, oil-based formula: Protects Vitamin C stability and prevents oxidation.

• Deep penetration: THD Ascorbate works below the skin’s surface.

• Peptide technology: Matrixyl 3000 targets aging at the root cause.

• Hydration boost: Hyaluronic Acid + Squalane restore moisture balance.

• Made in Minnesota: Crafted in small batches by expert formulators, not marketers.

FAQ

What makes THD Ascorbate better than regular Vitamin C?
Unlike L-ascorbic acid, THD Ascorbate is oil-soluble, stable, and penetrates deeper, providing longer-lasting brightening and collagen support.

Is it safe for sensitive skin?
Yes. This formula is gentle, non-irritating, and ideal for those who can’t tolerate traditional Vitamin C serums.

How soon will I see results?
Most users notice improved radiance in 2–4 weeks, with firmer, smoother skin after consistent use for 6–8 weeks.

Can I use this with retinol or Bakuchiol?
Yes. It layers well with both and enhances anti-aging results.

Transform Your Skin

This is more than just a Vitamin C serum—it’s a multi-active treatment serum that combines antioxidant protection, peptide-powered collagen support, and deep hydration in one. Experience a brighter, firmer, and more youthful complexion with the Vitamin C Brightening Serum by St. Croix Products.