COSRX The Vitamin C 23 Serum

COSRX The Vitamin C 23 Serum is a high-strength vitamin C serum with a 23% concentration. It is designed to brighten the look of skin and even out the appearance of tone, with a lightweight, watery texture that absorbs quickly.

COSRX The Vitamin C 23 Serum: Key Benefits

• 23% vitamin C concentration
• Brightens the look of skin
• Vitamin E derivative
• Sodium hyaluronate
• Watery, quick-absorbing texture

What a 23% Vitamin C Serum Does

Vitamin C is an antioxidant that is widely used to brighten the look of dull skin and to even out the appearance of dark spots. At a high concentration like 23% it is a strong product, best for people who have already used vitamin C or who introduce it slowly. The watery texture makes it easy to spread, and a vitamin E derivative and sodium hyaluronate add support and hydration.

Because high-strength vitamin C can tingle, it is wise to start with a small amount and build up.

What Is Inside

The main ingredient is vitamin C at 23%. The formula also has a vitamin E derivative and sodium hyaluronate, the salt form of hyaluronic acid.

How to Use It

Apply two or three drops to clean skin, usually in the morning, and pat in. Follow with a moisturizer and a broad-spectrum sunscreen, since vitamin C works alongside daily sun protection. Begin every second day if your skin is not used to vitamin C. Keep the bottle tightly closed and away from light and heat.

Who Should Use It

It suits people who want a strong vitamin C serum for dullness and uneven tone. If your skin is very sensitive, begin with a lower-strength product or patch test first.

Where It Fits in a Routine

Use after cleansing and before moisturizer. Avoid combining it with strong acids or retinol in the same routine at first, and introduce one active at a time.

Questions and Answers

How strong is the COSRX Vitamin C 23 Serum?

It contains 23% vitamin C.

Can I use it every day?

Many people can, but start slowly and use sunscreen daily.

What texture does it have?

A lightweight, watery serum that absorbs quickly.

Is it okay for sensitive skin?

It is a high-strength formula, so patch test and start slowly.

Explore more Face Serums and the full Skincare range at myskincarely, or see everything we carry from COSRX. Free shipping on all US orders. For general skin care guidance, visit the American Academy of Dermatology.