Etude Therapy Air Sheet

ETUDE's 02 Therapy Air line is a collection of sheet masks with nine distinct serums, each targeting a different skin concern. The Air Mask format uses a thin, breathable sheet that allows the serum to absorb without the heavy occlusion of thicker cotton masks. Variants range from hydrating staples like hyaluronic acid and aloe to brightening lemon, firming collagen and pearl, calming teatree, and nourishing snail and manuka honey. Each single-use mask holds 20ml of serum.

  • 9 Variants
  • Breathable Sheet
  • 20ml Serum Per Mask
  • Korean Formula

By Skinsli editorial Updated

Buying guide

ETUDE 02 Therapy Air Sheet Mask Guide - All 9 Variants

ETUDE's 02 Therapy Air sheet masks are single-use facial masks soaked in 20ml of concentrated serum. The collection covers nine common skin concerns with distinct active ingredients - making it practical to keep several variants on hand and choose based on what your skin needs on a given day. This guide covers each variant, explains when to use them, and outlines how to incorporate sheet masks into a broader skincare routine.

The 02 Therapy Air Mask Format

The '02 Therapy Air' name refers to the breathable sheet material rather than any oxygen-delivery claim. The sheet is thinner than standard compressed-cotton masks and drapes closely against the face, which improves serum contact with the skin surface. Because it breathes, it feels lighter to wear and tends to stay in place better than heavier cotton sheets.

Each mask contains 20ml of serum - a moderate amount that leaves enough residue in the packet to apply to the neck and décolletage after removing the mask from the face. The sheet can be left on for 10-20 minutes depending on skin condition and preference.

Aloe - For Soothing and Redness Reduction

The Aloe variant uses aloe barbadensis leaf extract as the primary active. Aloe is a well-established skin-calming ingredient, useful after sun exposure, after exfoliation treatments, or on days when the skin feels reactive. The serum is typically cooler and lighter in texture than the oil-heavier variants like Manuka Honey or Pearl. Good choice for combination or oily skin types that want hydration without heaviness.

Ceramide - For Barrier Support and Dryness

The Ceramide variant is formulated for skin that feels tight, flaky, or compromised. Ceramides are lipid molecules that form part of the skin's natural barrier; supplementing them topically supports moisture retention and reduces transepidermal water loss. This is the best option in the range for dry or dehydrated skin, particularly in cold weather or after prolonged exposure to air conditioning. It works well alongside a rich moisturiser applied immediately after removing the mask.

Collagen - For Firmness and Elasticity

The Collagen variant uses hydrolysed collagen, which functions as a humectant and film-forming agent at the skin surface. It does not stimulate collagen synthesis in the dermis (topical collagen molecules are too large to penetrate deeply), but it improves the feel and appearance of the skin surface, adding a temporary plumping and smoothing effect. A practical option before an event when you want the skin to look more settled.

Lemon - For Brightening

The Lemon variant uses lemon fruit extract, which contains vitamin C precursors and mild alpha-hydroxy acids. This gives it a mild brightening action suitable for dull or uneven skin tone. It is not equivalent in potency to a dedicated vitamin C serum, but it provides a noticeably brighter-looking result after use that makes it a popular mask for the morning before a social occasion. Use with SPF in the morning if you apply this mask to sun-exposed skin.

Tea Tree - For Blemish-Prone Skin

The Tea Tree variant is the best choice from this range for oily or blemish-prone skin. Tea tree oil (melaleuca alternifolia) has well-documented antimicrobial and mild anti-inflammatory properties. The serum formula in this mask contains tea tree extract at levels appropriate for the face - high enough to deliver a noticeable clarifying effect without the irritation risk of undiluted tea tree oil. Use 1-2 times per week on weeks when breakouts are more active.

Snail - For Repair and Hydration

Snail mucin filtrate is a well-established Korean skincare ingredient with studies supporting its role in hydration and light wound repair. The 02 Therapy Air Snail variant contains snail secretion filtrate as a core active, making it a good recovery mask after intensive exfoliation, minor skin trauma, or a period of barrier disruption. The texture of snail serum is slightly more viscous than water-based variants, and the mask leaves a comfortable film on the skin after removal.

Pearl - For Luminosity and Evening Skin Tone

The Pearl variant uses pearl powder (hydrolysed conchiolin protein) as the key ingredient. Pearl has been used in traditional Korean and Chinese beauty preparations for centuries; its main cosmetic effect is light diffusion and a subtle brightening of the skin surface. The mask delivers a soft-focus luminosity effect that makes it popular for pre-event use. It pairs well with a lightweight hydrating essence underneath and a dewy-finish moisturiser after.

Hyaluronic Acid - For Hydration

The Hyaluronic Acid variant is the most straightforward hydrating option in the range. Hyaluronic acid at low molecular weights penetrates the upper layers of the skin and draws moisture into the cells; at higher molecular weights it sits on the surface and forms a film that locks in hydration. Most commercial HA formulas use a blend of molecular weights. This is the best everyday-use mask in the 02 Therapy Air range and the one to default to when skin feels dehydrated rather than reactive or problematic.

Manuka Honey - For Nourishment and Glow

The Manuka Honey variant is the richest-feeling mask in the 02 Therapy Air range. Manuka honey is a natural humectant and has mild antimicrobial properties. The serum texture is heavier than the aloe or hyaluronic acid versions, making this variant more suitable for dry and normal skin types than for oily or acne-prone skin. It leaves the skin with a nourished, dewy finish. Use in the evening when a slightly heavier residue is not a concern.

How to Use ETUDE Sheet Masks

The standard sheet mask application sequence is straightforward:

  1. Cleanse and tone as usual.
  2. Unfold the mask and apply to the face, pressing from the centre outward to remove air bubbles.
  3. Leave on for 15-20 minutes. Remove before the mask begins to dry - a drying mask pulls moisture back out of the skin.
  4. Remove and press remaining serum into the skin with clean fingertips. Do not rinse.
  5. Apply the serum remaining in the packet to the neck and décolletage.
  6. Follow with moisturiser to seal in the serum.

Sheet masks function as a serum step, not a moisturiser. Always apply a moisturiser after to prevent the hydration delivered by the mask from evaporating.

FAQ

Frequently asked questions

  • Nine variants are currently in stock: Aloe, Ceramide, Collagen, Lemon, Tea Tree, Snail, Pearl, Hyaluronic Acid, and Manuka Honey. Each contains 20ml of serum targeted to a specific skin concern.

  • The Ceramide and Hyaluronic Acid variants are the strongest options for dry or dehydrated skin. Ceramide supports the barrier and reduces moisture loss; Hyaluronic Acid draws and holds water in the skin. Manuka Honey is the richest-feeling option and works well for dry skin that also wants a nourishing finish.

  • 15-20 minutes is the standard range. Remove the mask before it begins to dry on the face - a drying sheet mask will pull moisture back out of the skin rather than continue delivering serum. Set a timer if you tend to forget.

  • Yes. A sheet mask functions as a serum step - it delivers active ingredients but does not seal them in. Follow with a moisturiser to lock in the hydration the mask deposited. Skipping the moisturiser step can result in the serum evaporating and the skin feeling drier after the mask than before.

  • Yes. Tea tree extract has antimicrobial and mild anti-inflammatory properties that make the Tea Tree variant a practical choice for blemish-prone skin. Use 1-2 times per week. For everyday hydration between uses, the Aloe or Hyaluronic Acid variants are a better fit for oily-prone skin types.

  • Snail secretion filtrate (snail mucin) is a Korean skincare staple with documented humectant and light skin-repair properties. It helps with hydration, surface smoothing, and recovery after exfoliation or barrier disruption. The texture is slightly more viscous than water-based variants, and the mask leaves a comfortable film on the skin after removal.

  • No. Topical hydrolysed collagen molecules are too large to penetrate into the dermis where collagen is produced. The Collagen variant works at the surface level as a humectant and film-forming agent - it temporarily improves the feel and appearance of the skin (a plumping and smoothing effect) but does not stimulate collagen synthesis.

  • Yes, but always apply broad-spectrum SPF 30+ sunscreen afterwards. The lemon extract contains vitamin C precursors and mild AHAs that can increase UV sensitivity on the skin. With sunscreen applied after, the Lemon variant is a practical morning brightening mask.

  • Most people use sheet masks 2-3 times per week. Daily use is possible with the gentler hydrating variants (Hyaluronic Acid, Aloe, Ceramide) for skin that tolerates it. Active variants like Tea Tree and Lemon are better suited to 1-2 times per week to avoid over-treating the skin.

  • Yes. skinsli sources ETUDE products from authorised Korean wholesale channels. These are the same Korean domestic-market formulas, not reformulated export versions. Packaging is primarily in Korean.