A lot of people who want to try vitamin C for the first time hold back because of past experiences with concentrated formulas that left their skin irritated or red. That’s exactly where the Dr.Althea Gentle Vitamin C 20% Serum – 30ml comes in, the ideal starting point for anyone new to vitamin C.
The formula is built around niacinamide and 3-O-ethyl ascorbic acid (a stable form of vitamin C), along with sea buckthorn extract, naturally rich in vitamin C beyond levels found in many fruits, all within a minimal formula of under 20 ingredients. That makes it one of the safest options from Dr. Althea for sensitive and acne-prone skin. You can also browse more of our Korean skincare products to complete your routine.
Benefits
- Helps fade dark spots and gradually even out skin tone
- Soothes the skin with green tea leaf water
- Safe and suitable for acne-prone skin
- Watery, non-sticky texture that absorbs quickly without leaving a shiny film
- Vegan formula, free from synthetic fragrance
Active Ingredients
- 3-O-Ethyl Ascorbic Acid: a stable, effective form of vitamin C that helps fade dark spots
- Niacinamide: evens out skin tone and supports the skin’s barrier
- Sea Buckthorn Extract: a natural source rich in vitamin C and antioxidants
- Green Tea Leaf Water: soothes sensitive, irritation-prone skin
- Adenosine & Allantoin: support skin elasticity and hydration
How to Use
After cleansing and toner, apply a few drops to the face, gently patting until fully absorbed. Use morning and night, and always follow with daytime sunscreen.
Best Suited For
Ideal for those new to vitamin C, and suitable for sensitive and acne-prone skin that needs gentle brightening without risking irritation.
Warnings
- For external use only; avoid contact with eyes
- Daily sunscreen use is recommended while using vitamin C products
- A patch test is recommended before first use
- Keep out of reach of children
FAQ
Is this serum good for someone trying vitamin C for the first time?
Yes, it’s specifically designed to be a gentle, safe entry point into vitamin C without irritation.
What’s the difference between this and the Vitamin C Boosting Serum 63%?
This serum has a lighter concentration and suits beginners, while the 63% version is stronger, containing tranexamic acid and alpha-arbutin for deeper brightening.
Is it suitable for acne-prone skin?
Yes, the formula is safe for acne-prone skin and won’t clog pores.
Does it need sunscreen alongside it?
Yes, daily sunscreen is always recommended when using vitamin C products.
Can it be used every day?
Yes, it can be used morning and night as part of your daily routine.

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