Description

Vitamin C, Solved.

You have tried vitamin C serums. They turned orange in the bottle. They pilled under your moisturizer. They stung on application and left your skin red. You gave up and decided vitamin C was overrated.

It is not overrated. It was badly formulated. The Radiance Concentrate fixes this by doing what should have been done from the start: putting vitamin C in an oil base where it is stable, penetrates deeper, and cannot oxidize.

The Science

Most vitamin C serums use L-ascorbic acid dissolved in water. This is problematic for three reasons. First, L-ascorbic acid oxidizes rapidly when exposed to air, light, or heat — which is why your serum turns orange-brown within weeks of opening. You are essentially applying a pro-oxidant to your face. Second, L-ascorbic acid has a pH of 2.5-3.5 for effective penetration, which causes stinging and irritation in sensitive skin. Third, as a water-soluble molecule, it cannot effectively penetrate the lipid-rich stratum corneum without chemical enhancers.

The Radiance Concentrate uses THD ascorbate (tetrahexyldecyl ascorbate) — an oil-soluble form of vitamin C. The advantages are decisive:

• Stability: THD ascorbate is stable at room temperature in an anhydrous (waterless) formula. No oxidation. No color change. The last drop is as potent as the first.
• Penetration: As a lipid-soluble molecule, THD ascorbate penetrates the skin barrier directly — studies show it reaches the dermis at concentrations up to 5x higher than L-ascorbic acid at equivalent doses.
• Conversion: Once inside the skin, THD ascorbate is enzymatically converted to active ascorbic acid exactly where it is needed — in the deeper layers where collagen synthesis occurs.
• Tolerance: Neutral pH. No stinging. No redness. Compatible with sensitive skin and other actives including retinol (or bakuchiol).

The rosehip seed oil base is not just a carrier — it is an active ingredient. Rosehip contains natural trans-retinoic acid (tretinoin) and high concentrations of linoleic acid, both of which work synergistically with vitamin C to boost collagen production and reduce hyperpigmentation through complementary pathways.

Key Ingredients

• THD Ascorbate (Tetrahexyldecyl Ascorbate) — Oil-soluble vitamin C at clinical concentration. Stimulates collagen synthesis, inhibits melanin production (reducing dark spots), and provides potent antioxidant protection against UV-induced free radical damage. The most advanced form of vitamin C available in skincare.
• Cold-Pressed Rosehip Seed Oil — 44% linoleic acid, natural trans-retinoic acid, and beta-carotene. The synergy between rosehip and THD ascorbate is the core innovation of this concentrate — two independent pathways to collagen stimulation and pigmentation reduction in a single formula.
• Olive-Derived Squalane — Provides the anhydrous base that keeps THD ascorbate stable. Also functions as an emollient that supports skin barrier integrity and prevents transepidermal water loss.
• Bakuchiol — A third pathway to collagen stimulation, complementing both the vitamin C and the rosehip. Clinical data supports bakuchiol as comparable to retinol for anti-aging benefits, without photosensitivity.
• Sea Buckthorn Extract — Concentrated source of carotenoids (beta-carotene, lycopene, zeaxanthin) and omega-7. Provides additional antioxidant protection and supports skin cell regeneration. The orange tint in the formula comes from these natural carotenoids.

The Ritual

This is a targeted treatment, not a general face oil. Apply it to specific areas of concern, or use it as a full-face treatment for overall radiance.

Targeted use: 2-3 drops on clean, damp skin. Press into areas of hyperpigmentation, sun damage, or dullness — typically cheeks, forehead, and décolletage. Follow with the Active Face Oil for full barrier support.

Full-face use: 3-4 drops as your vitamin C step. Press into entire face and neck. Follow with the Active Face Oil or use alone if your skin runs oily.

Morning or evening — your choice. Unlike L-ascorbic acid, THD ascorbate does not degrade in sunlight and does not cause photosensitivity. In the morning, it boosts your antioxidant defense under SPF. In the evening, it supports overnight collagen repair.

Visible results in 4-6 weeks of consistent use. Dark spots fade progressively. Overall luminosity improves from week two.

Who This Is For

Hyperpigmentation and dark spots from sun exposure, acne scarring, or hormonal changes. Dull, tired-looking skin that has lost its luminosity. Anyone who has given up on vitamin C after bad experiences with water-based serums. Skin that needs targeted brightening without full-face retinol commitment.

What Makes It Different

This is vitamin C done correctly. No water means no oxidation. Oil-soluble means deeper penetration. Anhydrous means the bottle lasts. The formula is concentrated — 15ml lasts 6-8 weeks because you use drops, not pumps. Compare this to the three half-oxidized vitamin C serums currently expiring in your bathroom cabinet and the economics become obvious.