COSRX Pure Vitamin C 23% Serum with Vitamin E & Hyaluronic Acid – Hydrating Facial Serum (0.7oz)

Overview

Meet the COSRX Pure Vitamin C 23% Serum, a lightweight blend designed to deliver a refreshing boost of glow. The formula combines a high concentration of pure vitamin C with vitamin E and hyaluronic acid, delivering a hydrating, fast-absorbing experience that layers well with other skincare. While results can vary, many users look to this serum for a brighter appearance, more even skin tone, and a smoother feel without heaviness.

Key benefits to expect

• Brightening potential with a 23 percent vitamin C concentration to help balance uneven tone over time
• Hydration from hyaluronic acid that helps the skin feel supple and cradle moisture
• Antioxidant support from vitamin E tocotrienol to help protect the surface and reduce visible signs of aging
• Lightweight, fast-absorbing texture that works under makeup or sunscreen
• Patch test recommended and guidance to store the serum in the fridge to slow oxidation

How to use

• Shake 1–2 times, then apply 2–3 drops once or twice daily to cleansed skin
• During the daytime, follow with a broad spectrum SPF 30+ sunscreen
• Avoid direct contact with the eyes; it can be applied near the eye area with care
• Store in the refrigerator to help preserve potency and freshness

Real-life use scenarios

Use this serum as part of a morning routine beneath sunscreen for a hydrating base or as part of a nighttime regimen focused on gentle brightening. The light texture makes it suitable for layering with other products without feeling heavy. For sensitive skin, consider a gradual introduction and observe how the skin responds over several days.

Safety and notes

• Patch testing on the body before facial use is advised when you first try this concentrated formula
• Keep the product refrigerated to help slow oxidation and maintain efficacy