Name: The Vitamin C 23 Serum
Brand: COSRX
Price: 24 EUR
Availability: InStock
Rating: 4.33 (6 reviews)

Question 1

What is The Vitamin C 23 Serum?

Accepted Answer

Reviewers consistently note that COSRX The Vitamin C 23 Serum is a potent and effective product for brightening skin tone and reducing hyperpigmentation due to its high concentration of L-ascorbic acid. Many users find it delivers visible results quickly, particularly for dark spots and overall radiance. However, its high potency also means it can be irritating, especially for sensitive skin types, and some users experience breakouts or a stinging sensation.

Question 2

Who is The Vitamin C 23 Serum best for?

Accepted Answer

Reviewers with tolerant skin, sun damage, and hyperpigmentation concerns love this serum.

Question 3

Who should avoid The Vitamin C 23 Serum?

Accepted Answer

People with sensitive skin or those new to vitamin C should approach this serum with caution or avoid it due to its high concentration.

Question 4

How do you use The Vitamin C 23 Serum?

Accepted Answer

Use AM only. Wait 30s after toner, apply a few drops, follow with moisturizer and SPF.

Question 5

How long until The Vitamin C 23 Serum shows results?

Accepted Answer

Hydration and initial brightening can be seen immediately, while significant fading of dark spots and hyperpigmentation typically appears within 2 to 4 weeks.

Question 6

How do you layer The Vitamin C 23 Serum in a routine?

Accepted Answer

Layer with hydrating toners or essences. Avoid layering with other potent actives like retinoids or AHAs/BHAs simultaneously to prevent irritation. Always follow with sunscreen.

Question 7

Is The Vitamin C 23 Serum worth the price?

Accepted Answer

Reviewers find the product to be a good value, especially when purchased on sale or in multi-packs, given its high potency and effectiveness in delivering visible results despite its small size.

The Vitamin C 23 Serum

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