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A single packet of RETURNU Deep Comfort Moisturizing facial sheet mask, featuring a dark gray pouch with a large coral-pink label and bold black text, set against a clean light gray background.

The Comforting Mask

RETURNU Deep Comfort Mask

A comforting hydration reset for cold, dry days. Created by a husband-and-wife team who left the Korean beauty industry to start their own label, this ampoule-rich mask combines birch sap, ceramides and 1,000ppm panthenol to hydrate deeply and help stop moisture escaping. Each sheet holds the equivalent of a full bottle of ampoule, on a cloud-soft, biodegradable sheet gentle enough for sensitive skin.

Hydrating · Softening · Comforting · Refreshing

Delivered Wednesday, October 28 with Royal Mail Tracked 48

* 96% accuracy based on an analysis of our last 15,000 orders

WHY WE PICKED IT

This mask was made for the cold, dry months, when skin turns tight and flaky. That’s exactly why we chose it.

Birch sap, ceramides and 1,000ppm of panthenol deliver deep hydration and help stop moisture escaping. Each sheet holds the equivalent of a full bottle of ampoule, and the biodegradable sheet is cloud-soft and gentle enough for sensitive skin.

Key Benefits

• Deep hydration: Birch sap and a full bottle’s worth of ampoule replenish dry skin.
• Locked-in moisture: 1,000ppm panthenol helps stop moisture escaping.
• Barrier care: Ceramides support a healthy barrier.
• Comfort: Gentle enough for sensitive skin.

Best for

Dry, tight or flaky skin, especially in the colder months. Gentle enough for sensitive skin.

When we’d use it

During a quiet evening. Make it part of a routine that feels good, not another step you have to do.

What caught our attention

The amount of ampoule. Each sheet holds the equivalent of a full bottle, so skin gets a generous, lasting dose of hydration rather than a quick hit.

What we love about the brand

ReturnU was founded by a husband-and-wife duo who left executive roles in the Korean beauty industry to create their own label. Their goal is natural-ingredient products that are ‘a positive turning point for the skin’, and you can feel that care in every formula.

The Sonagi Verdict

A considered choice for skin that feels dry. The appeal is simple: replenish moisture and comfort tired-feeling skin, without the exaggerated promises.

How to Use

• Prep: Cleanse your face and apply toner if you like.
• Apply: Unfold the mask and smooth it over your face, avoiding the eyes and lips.
• Let it work: Leave it on for the time on the pack, usually 10–20 minutes.
• Finish: Peel it off and pat the remaining essence into your skin. No rinsing needed.
• Sonagi tip: Don’t waste the extra essence in the pouch. Smooth it over your neck.

Ingredients

Water, Glycerin, Methylpropanediol, Tripropylene Glycol, 1,2-Hexanediol, Hydroxyacetophenone, Carbomer, Arginine, Panthenol, Polyglyceryl-10 Laurate, Disodium EDTA, Dipotassium Glycyrrhizate, Xanthan Gum, Allantoin, Sodium Hyaluronate, Betula Platyphylla Japonica Juice, Hydrogenated Lecithin, Cetearyl Alcohol, Stearic Acid, Ceramide NP, Ceramide NG, Phytosphingosine, Cholesterol, Ceramide AS, Ceramide AP, Ceramide EOP.

From the shelves of Bloomingdaleʼs New York to your home, this mask has been gaining popularity with American skincare enthusiasts. Created by a husband and wife duo who left executive jobs in the Korean Beauty Industry to create their own label with one simple goal: natural ingredient products that are a “positive turning point for the skin”. The Deep Comfort Mask is the first, with more to come. A deeply hydrating mask created for the cold, dry winter months when skin becomes tight, flaky, and dry. This ampoule-rich sheet is infused with Birch Sap, Ceramide, and 1,000 ppm of Panthenol, an ingredient that helps lock in moisture and prevent it from evaporating. Containing the equivalent of a full bottle of nourishing ampoule, it delivers instant and long-lasting hydration, leaving the skin feeling soothed and replenished. Made with an eco-friendly, biodegradable sheet, it has a cloud-soft, gentle fit that is ideal even for sensitive skin. Enjoy a fresh, dewy glow from the moment it touches your face.

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FAQs

What is the RETURNU Deep Comfort Mask?

The RETURNU Deep Comfort Mask is a Korean moisturising sheet mask designed to provide deep hydration and comfort for dry, dehydrated or sensitive-feeling skin. Available at SONAGI, it features Birch Sap, 1,000 ppm Panthenol and multiple ceramides. Its biodegradable sheet delivers a nourishing ampoule-rich essence, helping skin feel softer, soothed and replenished while supporting a fresh, dewy-looking complexion.

How does the RETURNU Deep Comfort Mask work?

The RETURNU Deep Comfort Mask combines moisturising ingredients with skin barrier-supporting components. Panthenol helps maintain hydration, while five types of ceramides support the skin's moisture barrier. Birch Sap and Sodium Hyaluronate complement the formula's hydrating properties. SONAGI describes the mask as delivering the equivalent of a full bottle of nourishing ampoule, leaving skin feeling comfortable and replenished.

What are the main benefits of the RETURNU Deep Comfort Sheet Mask?

The RETURNU Deep Comfort Sheet Mask focuses on intensive hydration, skin comfort and moisture barrier support. Its formula contains Birch Sap, Panthenol and five types of ceramides to help reduce the feeling of dryness and tightness. SONAGI highlights its soft, biodegradable sheet and ampoule-rich essence, which are designed to leave skin feeling nourished, refreshed and visibly dewy.

How do I use the RETURNU Deep Comfort Mask?

After applying toner, gently place the RETURNU Deep Comfort Mask evenly over your face. Leave the sheet on for 10–20 minutes, allowing its moisturising essence to remain in contact with the skin. Remove the mask and gently pat the remaining essence into your face. SONAGI recommends avoiding contact with the eyes and mouth and discontinuing use if irritation or a rash appears.

How long should I leave the RETURNU Deep Comfort Sheet Mask on?

The RETURNU Deep Comfort Sheet Mask should be left on for 10–20 minutes, according to SONAGI's product instructions. During application, the sheet delivers an ampoule-rich essence containing Panthenol, Birch Sap and ceramides. After the recommended time, remove the mask and gently pat the remaining essence into the skin. The instructions do not recommend overnight application.

Is the RETURNU Deep Comfort Mask good for dry skin?

Yes, the RETURNU Deep Comfort Mask is specifically designed to provide deep hydration for dry and tight-feeling skin. SONAGI describes it as particularly useful during cold winter months when skin can become flaky or uncomfortable. Its formula features 1,000 ppm Panthenol, Birch Sap, Sodium Hyaluronate and five types of ceramides to help maintain moisture and support the skin barrier.

Is the RETURNU Deep Comfort Mask suitable for sensitive skin?

SONAGI describes the RETURNU Deep Comfort Mask as gentle and suitable for all skin types, including sensitive skin. Its cloud-soft biodegradable sheet is designed to fit comfortably against the face, while ingredients such as Panthenol, Allantoin and ceramides support skin comfort. However, individual reactions can vary, so customers should review the ingredients and discontinue use if irritation occurs.

What ingredients are in the RETURNU Deep Comfort Mask?

The RETURNU Deep Comfort Mask contains Birch Sap, Panthenol at 1,000 ppm, Glycerin, Sodium Hyaluronate, Allantoin and five types of ceramides: Ceramide NP, NG, AS, AP and EOP. The published ingredient list also includes Phytosphingosine, Cholesterol and Hydrogenated Lecithin. SONAGI highlights the formula's combination of moisturising and barrier-supporting ingredients for dry, dehydrated and sensitive-feeling skin.

What does Panthenol do in the RETURNU Deep Comfort Mask?

Panthenol is a key ingredient in the RETURNU Deep Comfort Mask, with a stated concentration of 1,000 ppm. SONAGI highlights its ability to help lock in moisture and reduce moisture loss. Combined with Birch Sap and ceramides, Panthenol contributes to the mask's hydrating and soothing properties, helping dry or tight-feeling skin feel softer, more comfortable and replenished.

What do ceramides do in the RETURNU Deep Comfort Sheet Mask?

The RETURNU Deep Comfort Sheet Mask contains five ceramides: Ceramide NP, Ceramide NG, Ceramide AS, Ceramide AP and Ceramide EOP. Ceramides help support the skin's natural moisture barrier and maintain hydration. The formula also contains Cholesterol and Phytosphingosine, which complement its barrier-focused skincare approach. SONAGI recommends the mask for skin experiencing dryness, tightness or dehydration.

What makes the RETURNU Deep Comfort Mask different from other hydrating sheet masks?

The RETURNU Deep Comfort Mask combines Birch Sap, 1,000 ppm Panthenol and five types of ceramides in an ampoule-rich formula. SONAGI describes it as containing the equivalent of a full bottle of nourishing ampoule. The mask also features an eco-friendly, biodegradable sheet with a cloud-soft fit, making it a moisture-focused option for people seeking comfortable skincare during colder, drier months.

Where can I buy the RETURNU Deep Comfort Mask in the UK?

The RETURNU Deep Comfort Mask is available from SONAGI, a UK-based Korean skincare retailer, for £4.50. It features Birch Sap, Panthenol and five types of ceramides in a biodegradable sheet mask designed for deep hydration and skin comfort. The recommended application time is 10–20 minutes, making it a convenient addition to a moisturising skincare routine.

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