medicube Deep Vita C Glutathione Brightening Mask 27 X 5ea

medicube Deep Vita C Glutathione Brightening Mask: Vitamin C and Glutathione Sheet Mask

This is medicube's brightening-focused sheet mask, combining vitamin C and glutathione in a single treatment format. At $26.21 for 5 masks ($5.24 per mask), it's priced as a mid-tier treatment sheet for users who want brightening benefits in the occluded sheet format. The combination of vitamin C and glutathione targets two brightening pathways simultaneously, which can produce faster results than either alone.

Sheet mask delivery of vitamin C is an interesting approach. The occlusion prevents the oxidation that pure vitamin C serums face when exposed to air. 15 minutes of concentrated contact also pushes more vitamin C into skin than a typical serum application. For users who find daily vitamin C serum too drying or irritating, a weekly vitamin C sheet mask delivers cumulative benefit with less barrier stress.

What It Does

Vitamin C inhibits tyrosinase and neutralizes free radicals, gradually brightening and protecting skin. Glutathione adds a secondary brightening pathway through different tyrosinase inhibition mechanisms. Together they deliver multi-pathway brightening faster than single-active formulations. The sheet format reduces oxidation and increases penetration during the 15-minute contact.

Who It's For

• Dullness and diffuse pigmentation: Primary brightening target.
• Post-inflammatory hyperpigmentation: Gradual fading.
• Sensitive skin that can't tolerate daily vitamin C serum: Gentler delivery.
• Pre-event brightening prep: 2 to 3 consecutive nights for brighter event-day skin.
• Medicube device ecosystem users: Compatible with AGE-R devices.

Key Specs

• Quantity: 5 masks per box, 27ml each
• Price: $26.21 ($5.24 per mask)
• Hero actives: vitamin C, glutathione
• Sheet type: conforming sheet
• Use frequency: 2 to 3 times weekly

How to Use

Apply to clean skin after toner. Unfold, smooth onto face, press out air pockets. Leave on 15 to 20 minutes. Follow with cream to seal. Follow with SPF the following morning religiously; vitamin C increases photosensitivity even as it provides antioxidant protection.

For brightening protocol: 2 to 3 times weekly for 6 to 8 weeks initially, then 1 to 2 times weekly for maintenance.

FAQ

Is sheet mask vitamin C as effective as serum?

Roughly equivalent to a 2-to-3 day serum routine in one sitting. Sheet masks deliver concentrated dose in 15 minutes; serums deliver daily doses over time. For weekly cumulative brightening, sheets and serums can be equivalent in total effect.

Does it combine well with glutathione?

Yes, they work through different pathways for brightening. Stacking them in one formulation is additive, not redundant.

Will it sting or cause irritation?

For sensitive skin, possibly. Vitamin C can tingle at the concentrations used in treatment masks. If stinging persists past 3 minutes or feels like burning, remove the mask. Most users tolerate it well.

Can I use it with retinol?

Yes, but not on the same night. Use this mask on non-retinol nights. Combining vitamin C mask with retinol on the same night over-taxes skin.

How long until I see brightening?

Immediate glow: day after first use. Diffuse dullness fading: 2 to 4 weeks. Post-inflammatory marks: 6 to 10 weeks.

Related Products

Pair with medicube AGE-R Glutathione Glow Ampoule for daily serum use between masks, or layer with a vitamin C serum from the vitamin C collection.

Browse the full medicube collection or related categories: Korean sheet masks, Korean brightening products.