COSRX The Vitamin C 23 Serum is a highly concentrated skincare product designed to enhance skin elasticity, brighten complexion, and reduce signs of aging. It contains 23% pure vitamin C (ascorbic acid), known for its potent antioxidant properties that help improve skin tone and texture. The serum also includes super vitamin E (tocotrienol), which has 50 times higher antioxidant activity than tocopherol, stimulating collagen production. Hyaluronic acid is added to maintain hydration, while allantoin soothes and relieves irritation.
The serum has a dual-layer structure with an oil layer on top to maintain freshness and delay oxidation. It comes in a 20ml glass dropper bottle, and it’s recommended to store it in the refrigerator after opening to preserve its efficacy. Users have reported a slight popping sound and a distinctive scent upon opening, which is normal for high-concentration vitamin C products.
Pros:
– ✅ High concentration of pure vitamin C for effective skin brightening and elasticity improvement.
– ✅ Includes super vitamin E and hyaluronic acid for enhanced antioxidant activity and hydration.
– ✅ Dual-layer structure helps maintain product freshness and delay oxidation.
– ✅ Affordable compared to similar high-concentration vitamin C serums.
Cons:
– ⚠ Distinctive scent upon opening, described as similar to corned beef, which may be off-putting to some users.
– ⚠ Requires refrigeration after opening and has a short shelf life of approximately two months.
– ⚠ Potential for mild stinging sensation upon application, especially for those new to high-concentration vitamin C products.
– ⚠ Sticky texture if too much product is applied, and it may stain fabrics.