ACTIVE INGREDIENTS · VITAMIN C
Stable, low-irritation vitamin C for the glow ritual.
Vitamin C is the brightening active at the centre of Korean glow-focused skincare, but its effectiveness depends entirely on stabilisation. Unstable forms oxidise in the bottle, turn orange, and lose activity before they reach the skin. OVESSI uses stable vitamin C derivatives, ascorbyl glucoside and tetrahexyldecyl ascorbate, that deliver the antioxidant and brightening benefit without the rapid degradation of pure L-ascorbic acid. The result is a formula that performs for the life of the bottle.
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The Lift : Peptide Age-Defying Eye Cream
The eye area feels firmer and held. A quiet lift you notice by touch.The Lift : Peptide Age-Defying Eye Cream
The eye area feels firmer and held. A quiet lift you notice by touch.Regular price £75Regular price -
The Light : Vitamin C Glow Serum
A brightness that builds slowly. Skin looks more lit by the week.The Light : Vitamin C Glow Serum
A brightness that builds slowly. Skin looks more lit by the week.Regular price £33Regular price -
The Eraser : Targeted Dark Spot Treatment, 1% Kojic
Dark spots soften over weeks, not days. Even where it mattered most.The Eraser : Targeted Dark Spot Treatment, 1% Kojic
Dark spots soften over weeks, not days. Even where it mattered most.Regular price £32Regular price -
The Tone : Kojic Brightening Face Cream
Tone that evens with patience. Light returns to the skin slowly.The Tone : Kojic Brightening Face Cream
Tone that evens with patience. Light returns to the skin slowly.Regular price £35Regular price -
The Polish : Resurfacing Kojic Exfoliator
Skin feels newly surfaced. Brighter where it once looked dull.The Polish : Resurfacing Kojic Exfoliator
Skin feels newly surfaced. Brighter where it once looked dull.Regular price £35Regular price -
The Gaze : Retinol-Alternative Eye Serum
The eye area looks smoother, never pulled. Quiet care, applied nightly.The Gaze : Retinol-Alternative Eye Serum
The eye area looks smoother, never pulled. Quiet care, applied nightly.Regular price £35Regular price -
The Renewal : Retinol-Alternative Moisturiser
Texture softens overnight. Skin you wake to feels rested.The Renewal : Retinol-Alternative Moisturiser
Texture softens overnight. Skin you wake to feels rested.Regular price £35Regular price -
The Soft Reset : Retinol Alternative Serum
Renewal without the sting. Skin feels smoother by the week.The Soft Reset : Retinol Alternative Serum
Renewal without the sting. Skin feels smoother by the week.Regular price £39Regular price
FREQUENTLY ASKED
Vitamin C questions
Which form of vitamin C is most stable in skincare?
Tetrahexyldecyl ascorbate, ascorbyl glucoside, and sodium ascorbyl phosphate are all significantly more stable than pure L-ascorbic acid, which requires a low pH and careful packaging to remain active. OVESSI uses stable derivatives that maintain activity across a normal shelf life without the rapid oxidation that makes pure forms unreliable in daily use.
Should I use vitamin C morning or evening?
Morning is preferred. Vitamin C is an antioxidant that helps neutralise the free radicals generated by UV exposure throughout the day. Used in the morning under SPF, it adds a second layer of photoprotection. Stable vitamin C derivatives can also be used in the evening without issue.
How long before vitamin C visibly improves skin tone?
Most people notice a visible improvement in radiance and evenness within three to four weeks of consistent daily morning use. In the OVESSI 28-Day Study, 87% of 68 participants saw a visible improvement in skin brightness by day 28.
Can I use vitamin C if I have sensitive skin?
Yes, with a stable derivative rather than high-concentration L-ascorbic acid. Pure vitamin C at high pH requires acidic formulation that can irritate sensitive skin. Stable derivatives at a neutral pH deliver the brightening and antioxidant benefit at a fraction of the irritation potential.
Still exploring
Find the stable vitamin C your skin can hold.
Skin AI identifies your skin’s glow concern and tolerance for actives and recommends the right vitamin C format and pairing for your ritual.
