Vitamin C: The Brightening Classic, Done Gently

Dull, tired-looking skin after a long week? Vitamin C is the classic way to bring the brightness back.

What is vitamin C?

Vitamin C is an antioxidant. Pure vitamin C (ascorbic acid) is the most researched form but can be unstable and tingly. Derivatives such as ascorbyl glucoside or sodium ascorbyl phosphate are gentler and more stable. Vitamin E is a classic partner antioxidant. Fruit extracts like yuja, tangerine and sea buckthorn add natural vitamin C too.

What it does for your skin

• Brighter-looking skin. It helps dull skin look fresher and more radiant.
• Evens out the look of tone. Over time, dark spots and patches look less noticeable.
• Antioxidant support. It helps skin cope with daily environmental stress.

Who it suits

Dull or uneven-looking skin. Sensitive skin should start with a vitamin C derivative or a low-strength formula.

Skin MBTI match: P (tone care). Not sure of yours? The Skin MBTI quiz tells you in three minutes.

How to use it

1. Use in the morning, after cleansing and before moisturiser.
2. Finish with sunscreen every morning.
3. Store it away from heat and light, and close the cap tightly.

When you'll notice it: Skin looks brighter within a few weeks. Dark spots take two to three months.

Good to know: Pure vitamin C can tingle at first. If it does, use it every other day until your skin adjusts.

What to pair it with

Vitamin C works well with vitamin E, niacinamide and hyaluronic acid. If your skin is sensitive, keep it and strong acids at different times of day.

Myth vs fact

Myth: Vitamin C can't be used with niacinamide.
Fact: That idea comes from old lab conditions. Most people use them together without problems.

How to choose one

• Pure vitamin C is listed as Ascorbic Acid. Gentler forms include Ascorbyl Glucoside, Sodium Ascorbyl Phosphate and 3-O-Ethyl Ascorbic Acid.
• First time, or sensitive skin? Start with a gentler form or a lower strength.
• Choose opaque or airless packs and use it up within a few months of opening.

Where to find it

From the big names, Purito's serum uses 5% pure vitamin C, and Medicube's capsule cream wraps vitamin C in a sea buckthorn base. goodal's green tangerine toner and KAINE's Vita Drop serum bring a gentler, fruit-based take.

See more in our Vitamin-C Glow Call collection.

FAQ

Morning or night?

Morning is popular because it pairs well with sunscreen, but night works too.

My vitamin C turned orange. Is it okay?

Pure vitamin C darkens as it oxidises. A deep orange or brown colour means it's time for a new bottle.

Is vitamin C safe for sensitive skin?

Start with a derivative or a low strength and use it every other day at first.

Korean corner: 반짝반짝 (ban-jjak-ban-jjak) means "sparkle, twinkle".