About this item
- A lightweight Vitamin C Booster Serum. Fight early signs of aging and improve the skin’s brightness with the lightweight and hydrating Vitamin C serum.
- Patch Test Recommended: This serum consists of highly concentrated pure Vitamin C. A patch test on the body is recommended before using it on the face.
- Dermatological Ingredients: Pure Vitamin C (Ascorbic acid) helps achieve youthful glowing skin. Super Vitamin E (Tocotrienol) helps fight signs of aging and slows down skin damage. Hyaluronic acid delivers rich moisture deep into the skin and helps reduce the appearance of fine lines and wrinkles.
- How to Use: Shake 1-2 times before use and apply 2-3 drops once or twice daily. For daytime wear, follow up with SPF 30+ sunscreen. Can be applied under the eye area; avoid direct eye contact. ✅ Store in the fridge to prevent oxidation.
- COSRX Standards: All COSRX products are formulated with skin-friendly ingredients that alleviate irritated skin. Hypoallergenic, Dermatologist tested, Animal Testing-FREE, Parabens-FREE, Sulfates-FREE, Phthalates-FREE
Product Description



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Patch Test RecommendedLightweight serum with 13% Pure Vitamin C (Ascorbic acid), Vitamin E (Tocotrienol), and Hyaluronic Acid. This highly concentrated formula evens skin tone and visibly improves fine lines. A patch test on the body is recommended before using on the face as this serum consists of highly concentrated pure Vitamin C. |
Clinical Test ResultsBased on Clinical Test results, skin elasticity improved 19% after 4 weeks and skin texture improved 113% immediately after use. Pigmentation diminished by 16% after 4 weeks. and the skin’s roughness was reduced by 20% immediately after use. |
THE Vitamin C SerumBased on a Clinical Test on the Antioxidant effects of the Vitamin C 13 Serum, the serum’s antioxidant effects lasted for 120 hours (5 days). Based on a Satisfaction Survey on 20 women aged from 30-65, 100% were satisfied with the hydration, improvement in skin texture, and illuminating effect of the serum. |



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![[COSRX] Pure Vitamin C Serum with Vitamin E & Hyaluronic Acid, Brightening & Hydrating Facial Serum for Fine Lines, Uneven Skin Tone & Dull Skin, 0.67fl.oz/20ml, Korean Skincare (Vitamin C 13% Serum) - Image 5](https://marwatcompany.com/wp-content/uploads/2023/12/10005-56.jpg)
![[COSRX] Pure Vitamin C Serum with Vitamin E & Hyaluronic Acid, Brightening & Hydrating Facial Serum for Fine Lines, Uneven Skin Tone & Dull Skin, 0.67fl.oz/20ml, Korean Skincare (Vitamin C 13% Serum) - Image 6](https://marwatcompany.com/wp-content/uploads/2023/12/10006-40.jpg)




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