# COSRX Advanced Pure Vitamin C 23% Serum 0.67oz

Get brighter, smoother skin with COSRX Advanced Pure Vitamin C 23% Serum, a lightweight daily booster that fades dark spots and firms fine lines.

- [Original product page](https://www.ofertitastop.com/us/product/cosrx-advanced-pure-vitamin-23-serum)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-10-15T20:48:03.770Z
- Category: Health & Beauty > Personal Care > Cosmetics > Skin Care > Lotion & Moisturizer
- Source store: amazon US
- Active deal: Yes
- Price: 24.30 USD
- Previous price: 37.31 USD
- Rating: 4.4 / 5
- Reviews: 1034

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

COSRX Advanced Pure Vitamin C 23% Serum is a lightweight, nonsticky booster that targets early signs of aging while brightening dull tone and uneven texture. The formula preserves a high 23% pure ascorbic acid concentration and pairs it with Vitamin E and glutathione for antioxidant support, making it practical for daily use when stored correctly and used with sunscreen in the morning.

## Key features

This serum offers a concentrated antioxidant blend that aims to reduce the look of fine lines and boost radiance without a lingering scent. The combination of pure Vitamin C, Super Vitamin E, and glutathione works on free radicals and pigmentation, according to the manufacturer. The texture dries to a hydrating finish that layers well under moisturizers and makeup, and the lightweight feel helps avoid a heavy or greasy afterfeel.

## Specifications

- Name: COSRX Advanced Pure Vitamin C 23% Serum with Vitamin E & Glutathione
- Format: Serum
- Capacity: 0.67oz
- Material: Ascorbic acid formula with tocotrienol and glutathione
- Color: Clear

## Usage tips

Shake the bottle 1 to 2 times before dispensing 2 to 3 drops once or twice daily. For daytime wear follow with SPF 30 or higher to protect freshly treated skin. A patch test is recommended, wait 24 hours before full facial use if no irritation appears. It can be applied near the under eye area with care to avoid direct contact with the eyes. Note that the manufacturer advises refrigeration after opening to slow oxidation, which helps maintain potency.

## What to expect

You may notice improved brightness and a smoother appearance over regular use, though some users may experience mild sensitivity at first. If irritation occurs stop use and consult a physician. Store as recommended to help preserve the active vitamin C concentration.

## Images

![COSRX Advanced Pure Vitamin C 23% Serum 0.67oz — 1](https://www.ofertitastop.com/i/H2OdUxCk5R7SQEOOJEmWgYSgfm0--lGpx39n1sqMG7Kv6jx59Jx-TpAABmJGVzyL8hzF68j7MET2_IGNFS6zGWiX-W8ty28PEOKocONhsESubzpuRCowhA.jpg)

![COSRX Advanced Pure Vitamin C 23% Serum 0.67oz — 2](https://www.ofertitastop.com/i/oMeqpnrcBQppLmwHpTZnoa-fhVNufc7KCHQ3ujBzsBi39Qc83_BXrPK1O0P4i3docH9ApJYmNybwlUCBXJg_qEA8MckUjCwlCnR3h5pS3cXMK8R3k6D0ng.jpg)

![COSRX Advanced Pure Vitamin C 23% Serum 0.67oz — 3](https://www.ofertitastop.com/i/FdLxSuz7rG60XTD0u_hEYHjC-DjWcNP3Ghu72nBIuhARbv2PfnDxsBm2hPUSjnoAu6r30qScW3_gzFmI_kiVIMo7Y5jaKUe8We0VUtDvdcFHnn-kzo9F1A.jpg)

![COSRX Advanced Pure Vitamin C 23% Serum 0.67oz — 4](https://www.ofertitastop.com/i/sItuGDUXE0C73AnMuVgFMEQ436JUrET5WNJAgp1FvREHJTQrSvqeu2jbrikzkYDV0k9RJ1u1-4ydSmd6pMF_9dYmsPHJ0-u_6f0E5d6yIlpXK7na0BCTjQ.jpg)

![COSRX Advanced Pure Vitamin C 23% Serum 0.67oz — 5](https://www.ofertitastop.com/i/lhtx3JHAK5W2iCK0NmhNk-PDAhRV1ZCzHH3OXD3Xhtd_pKpRbwO87nMQvg1bAiHo2Ovos6hrLtcfcD9P1nyO2nAxV1OO5A9YUV45XnaHqH1PO6yI6y6cvg.jpg)