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Vitamin C's biggest formulation challenge is instability: L-ascorbic acid degrades when exposed to air, light, and water, losing potency within weeks of opening. medicube's Deep Vita C Capsule Serum addresses this through encapsulated delivery: the vitamin C is locked in micro-capsules that release on application, protecting potency and improving skin absorption.
For users who've been disappointed by vitamin C serums that oxidize (turn yellow or brown) within weeks, encapsulated formulas are the upgrade. medicube's positioning is premium mid-tier, typically with strong ingredient science.
Encapsulated vitamin C is released on skin contact, providing stable antioxidant and brightening action. Delivery is deeper than standard serum application. Over 8 to 12 weeks, expect visible brightening, reduced dullness, and improved tone evenness. Formula remains potent throughout bottle lifespan.
AM application for antioxidant protection. After cleansing and toner, apply 3 to 4 drops. Pat until capsules break and serum absorbs. Follow with moisturizer and SPF.
More stable, potentially deeper delivery, often gentler. L-ascorbic acid delivers stronger immediate results. For long-term consistent use, encapsulated wins on stability.
Different formulations. Klairs is straightforward L-ascorbic. medicube is encapsulated. Klairs is more budget. medicube is more advanced delivery.
The encapsulated format is more stable than traditional L-ascorbic serums. Expect a longer stable window, though proper storage (cool, dark) still matters.
Brightening in 4 to 6 weeks. Tone correction over 8 to 12 weeks.
Space them. Vitamin C AM, retinol PM.
Browse the medicube collection or related: vitamin C products, brightening.
Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
US$40
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