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NKD Koala Sleep Mask 100 ml pump bottle on a soft mist background
Hero ingredients: 2% glycolic and 1% lactic acid, lactobionic acid and hyaluronic acid
How to use the Sleep Mask: an even layer in the evening, rinse in the morning, 2 to 3 nights a week
Model holding the Sleep Mask bottle, with callouts for 2% glycolic and 1% lactic acid, lactobionic acid with hyaluronic acid, and 2 to 3 nights a week
Model holding the Sleep Mask
Found in these Rituals: the Sleep Mask is part of the Overnight Renewal, Advanced Anti-Aging, Weekly Reset and Full Face Rituals
Overnight mask, 100ml

Sleep Mask

In your routine CleanseSerumSleep Mask

2% Glycolic and 1% Lactic Acid, with Lactobionic Acid and Hyaluronic Acid, in an overnight mask for skin that looks smoother and brighter. Use 2 to 3 nights a week. Made in Melbourne.

Size
100ml

15% off any 3 formulas, applied automatically in your bag. Mix and match

Free shipping on Australian orders over $75

Or 4 payments of $9.75 with Afterpay

Not sure it suits your skin? Take the 60-second skin quiz

Goes well with

Weekly Reset RitualWith the Gel Cleanser With Scrub and Hyaluronic Acid Serum. Save 15% on all three together.
$82
Helps with
  • Uneven texture
  • Dullness
  • Congestion
  • Fine lines
  • Post-blemish marks
How to use

Apply an even layer to clean, dry skin in the evening as the last step of your routine. Leave on overnight and rinse thoroughly in the morning. Use 2 to 3 times per week or as tolerated. Do not use on the same night as the Retinol Serum.

Key ingredients
  • Glycolic Acid: resurfaces overnight
  • Lactic Acid: a larger AHA that helps hold moisture
  • Lactobionic Acid: a polyhydroxy acid (PHA)
  • Sodium Hyaluronate: keeps skin comfortable
  • Phytic Acid: antioxidant support
The formula

What makes the Sleep Mask different?

Three acids, one mask. 2% Glycolic and 1% Lactic Acid, with Lactobionic Acid, loosen dead skin cells overnight for skin that looks smoother and more luminous. Sodium Hyaluronate replenishes moisture as the acids work, and Phytic Acid adds antioxidant support.

Who it's for. Skin with uneven texture, dullness or congestion. Never use it on the same night as the Retinol Serum. AHAs increase sun sensitivity, so wear SPF the next day and for a week after you stop. Contains lactobionic acid, which comes from milk.

What to expect. Mild tingling when you apply it is normal; rinse it off if it stings.

Good for
Uneven texture, dullness and congestion
Contains
2% Glycolic and 1% Lactic Acid, with Lactobionic Acid
Fragrance
Contains fragrance
When to use
Evenings, 2 to 3 times a week, never on retinol nights
Value
100ml at $0.39 per ml. 15% off in the Weekly Reset Ritual or on any 3 formulas
Application

How do I use the Sleep Mask?

  1. 01

    Cleanse PM

    Start with your Gentle Face Wash in the evening on clean, dry skin.

    Do not use on the same night as the Retinol Serum.

  2. 02

    Apply an even layer

    Press an even layer into clean, dry skin as the last step of your evening routine.

    Avoid the eye area and any broken skin.

  3. 03

    Sleep, then rinse

    Leave on overnight and rinse thoroughly in the morning. Use 2 to 3 times per week, or as tolerated.

    Always follow with SPF the next day. AHAs increase sun sensitivity.

Use 2 to 3 times per week and rinse thoroughly in the morning. Do not use on the same night as the Retinol Serum. Always wear SPF the following day.

Model holding the Sleep Mask
What's inside

What is in the Sleep Mask?

  • Glycolic Acid2%

    The smallest AHA molecule, sitting second on the ingredient list. Resurfaces the skin's surface overnight for skin that looks smoother and more luminous.

  • Lactic Acid1%

    A larger AHA that resurfaces while helping skin hold onto moisture rather than losing it.

  • Lactobionic Acid

    A polyhydroxy acid (PHA) with antioxidant properties. It is derived from milk.

  • Sodium Hyaluronate

    Replenishes moisture while the acids work, so skin feels comfortable rather than tight.

  • Phytic Acid

    Antioxidant support that also helps brighten the look of uneven tone.

Full ingredient list

Aqua (Water), Glycolic Acid, Xanthan Gum, Polysorbate 20, PEG-40 Hydrogenated Castor Oil, Glycerin, Hydroxyacetophenone, Sodium Benzoate, CI 77491, Phytic Acid, Sodium Hydroxide, Titanium Dioxide, Sodium Hyaluronate, Fragrance, Dimethicone, Lactic Acid, Lactobionic Acid, Hydroxyethylcellulose.

What does each ingredient do? Read the glossary
Warnings and storage

Sunburn alert: this product contains alpha hydroxy acids that may increase your skin's sensitivity to the sun and particularly the possibility of sunburn. Use a sunscreen, wear protective clothing and limit sun exposure while using this product and for a week afterwards. For PM use only: rinse off in the morning. Contains fragrance. Avoid contact with eyes and broken skin. Patch test before first use. Discontinue if irritation occurs. Keep out of reach of children.

Works well together

Complete your Ritual

Cleanse first, and a layer of hydration underneath keeps skin cushioned overnight.

The full routine Weekly Reset Ritual

With the Gel Cleanser With Scrub and Hyaluronic Acid Serum. Save 15% on all three together.

$82
Before: CleanseGel Cleanser With Scrub

Cleanse and exfoliate first on your reset evening.

$29
Before: HydrateHyaluronic Acid Serum

Layer underneath to keep skin cushioned through the night.

$29

The Sleep Mask is part of these Rituals: Overnight Renewal Ritual, Advanced Anti-Aging Ritual, Weekly Reset Ritual and Full Face Ritual.

Reviews

From the Rituals with this formula

These are reviews of the full Ritual, which includes the Sleep Mask.

Weekly Reset Ritual

5.0
Rated 5.0 out of 5 stars
Based on 1 review
100%would recommend this product
1 review
  • H
    Harper
    Verified Reviewer
    I recommend this product
    Skin concerns Uneven tone, Dullness
    Age range 25–34
    Rated 5 out of 5 stars
    2 hours ago
    My New Sunday Self-Care Favourite 🤍

    Okay, obsessed with this! Such a good little Sunday reset. My skin feels so fresh and soft afterwards, and I love having everything I need in one kit. Definitely keen to make this a weekly thing 🤍

About this formula

Questions about the Sleep Mask

How often should I use the NKD Koala Sleep Mask?

Two to three nights a week. Apply an even layer to clean, dry skin as the last step of your evening routine, leave it on overnight and rinse thoroughly in the morning.

Can I use the Sleep Mask on the same night as the Retinol Serum?

No. Alternate them on different nights.

Do I need SPF after using the Sleep Mask?

Yes. It contains alpha hydroxy acids, which can increase sun sensitivity. Use sunscreen the next day and for a week after you stop using it.

Can I use the Sleep Mask if I am new to acids?

Start with one night a week for the first two weeks, then build to two or three. Patch test first, and rinse it off if it stings.

Will the Sleep Mask make my skin peel?

Light flaking can happen as the acids loosen dead skin, especially at first. Use it less often if this happens, and stop if you have burning or a rash.

Can I use the Sleep Mask with the Anti-Acne Serum?

Use them on different nights. This mask contains AHAs and the Anti-Acne Serum contains salicylic acid, so together they can be too much exfoliation.

Is the Sleep Mask vegan?

No. It contains lactobionic acid, which comes from milk.

What can I use with the Sleep Mask?

The Weekly Reset Ritual uses it after the Gel Cleanser With Scrub and the Hyaluronic Acid Serum on the same evening. Keep it off retinol nights.

More answers in the FAQs and the ingredient glossary.