Beyond Vitamin C Serum

A stabilized antioxidant serum that brightens and protects without irritating sensitive skin. Oil-soluble Tetrahexyldecyl Ascorbate delivers Vitamin C deep into keratinocytes where it matters most.

About Beyond Vitamin C Serum

Tetrahexyldecyl Ascorbate is a lipid-soluble, ester form of Vitamin C that penetrates the stratum corneum more effectively than water-soluble L-ascorbic acid. Peer-reviewed research shows it reaches keratinocytes intact, delivering antioxidant activity without the low-pH irritation of traditional ascorbic acid formulations.

Beyond Vitamin C Serum is part of the physician-formulated skincare line curated by SeeBeyond Medicine's triple board-certified founder.

We selected Tetrahexyldecyl Ascorbate specifically because it provides full antioxidant defense without triggering redness or sensitivity — an evidence-based, root-cause choice our Scarsdale, NY and Greenwich, CT clinics have refined since 2006.

Over 20,000 patients rely on SeeBeyond Medicine for whole-person, functional skincare care.

This serum suits all skin types, including reactive and acne-prone. Apply to cleansed skin morning or evening before moisturizer for radiance, tone correction, and environmental protection.