Summer Sale All Items 60% OFF
Free Worldwide Shipping On All Orders





Couldn't load pickup availability
Free standard shipping on orders
We are pleased to offer Free Worldwide Shipping on all orders, delivering to all countries and regions supported by our logistics network.
There are no restrictions on order quantity, parcel size, or shipment weight — every order ships at no cost to you. In addition, all customs duties, import taxes, and government-imposed fees associated with your shipment will be fully covered by us, ensuring you will not incur any extra charges upon delivery.
Please note that delivery times may vary due to local customs procedures and carrier conditions, but your shipping and customs costs will remain completely free under this policy.
We provide a secure and reliable Free Returns service for all customers. Items that remain unused and unopened may be returned within 60 days for a full refund.
All return shipping expenses, including customs-related fees, are fully covered by us.
Refund processing will be completed within 4 weeks from the date the return shipment is sent, regardless of whether the package has arrived at our facility. In general, refunds are finalized significantly earlier, ensuring a smooth and dependable experience.
medicube is a Korean dermocosmetic brand that grew out of a clinical skincare approach, with products designed to pair with their at-home beauty devices (the AGE-R line). The Glutathione Glow Ampoule is part of this device-compatible ecosystem but works on its own as a topical brightening serum. At $15.60 for 30g, it's aggressively priced for a glutathione-forward ampoule. The "AGE-R" in the name references the brand's device line, implying this ampoule is designed to be used before or after medicube's at-home devices for enhanced absorption.
Glutathione is a tripeptide antioxidant with well-documented skin-brightening effects when delivered effectively. The challenge with topical glutathione is penetration; glutathione molecules are relatively large and don't easily enter skin through simple serum application. Medicube's formulation approach, especially when paired with their device for enhanced absorption, attempts to address this limitation.
Glutathione inhibits tyrosinase and the enzymatic pathway to melanin production, gradually fading pigmentation and evening skin tone over 8 to 12 weeks. As an antioxidant, it also neutralizes oxidative stress. Combined with supporting brightening actives (niacinamide and vitamin C in typical medicube formulations), the ampoule delivers multi-pathway brightening. With device use: penetration improves, results potentially faster.
Apply to cleansed skin after toner. Dispense 3 to 4 drops, pat gently onto face and neck. Allow absorption, then follow with serum or cream. For device use: apply according to device instructions (typically after cleansing and before device application).
For intensive brightening: pair with vitamin C in morning and retinol on alternating nights, with this ampoule as the glutathione layer.
Effectiveness is debated. Oral glutathione has more established evidence; topical is harder to penetrate effectively. Formulations matter: encapsulation, delivery technology, and device-enhanced absorption can improve penetration. At the price of $15.60, this is a reasonable experiment even if uncertain benefit.
Different derivatives. Ethyl glutathione and liposomal forms are newer delivery systems with better penetration claims. If medicube uses standard glutathione, the derivative forms from other brands may penetrate better. Check formulation details at time of purchase.
Yes, the ampoule works as a standalone serum. The device accelerates penetration but isn't required for basic use.
Melasma responds partially to glutathione. For hormonal melasma, prescription tranexamic acid or hydroquinone is more effective. Glutathione can be supportive maintenance.
Daily use: 2 to 3 months.
Pair with medicube Deep Vita C Glutathione Brightening Mask for sheet mask format of same active, or layer with a vitamin C serum from the vitamin C collection.
Browse the full medicube collection or related categories: Korean brightening products, glutathione skincare.
Thanks for subscribing!
This email has been registered!