[IOPE] Vitamin C Expert 25% Antioxidant Toning serum 23ml

About this product

IOPE's Vitamin C Expert is a stabilized 25% vitamin C serum from Korea designed to brighten dull skin and improve firmness in one step. The formula combines pure ascorbic acid with ferulic acid and glutathione to create a potent antioxidant treatment that resists oxidation longer than standard vitamin C serums, so you get sustained results without the fast degradation that makes many brightening serums lose effectiveness quickly.

Best for

• Skin type: All skin types, including sensitive
• Age range: 20s and up
• Skin concerns: Dullness, dark spots, loss of firmness, large pores, sun damage, uneven tone
• Mood / Occasion: Daily routine, morning brightening, pre-makeup preparation

Key benefits

• Visibly brightens skin and restores radiance within days of consistent use
• Firms and smooths skin texture with refined pore appearance
• Absorbs quickly into an oil-free formula without leaving tackiness
• Maintains potency longer thanks to an advanced stabilization system that slows vitamin C oxidation

Hero ingredients

• Ascorbic acid (25%): Pure vitamin C that brightens, firms, and protects skin from environmental damage.
• Ferulic acid & glutathione: Antioxidants that stabilize vitamin C and extend its shelf life and efficacy on skin.
• Gluconolactone (PHA): A gentler exfoliant that refines texture and supports skin barrier health without irritation.

How to use

After cleansing and toning, apply a couple of drops all over your face and let it absorb completely before applying moisturizer or sunscreen. For best results and to preserve the serum's potency, store the bottle in the refrigerator to slow oxidation of the vitamin C.

Authentically Korean

IOPE is a premium Korean skincare brand, and we source this serum directly from authorized Korean suppliers to guarantee authenticity and freshness.