U BeautymaskTreat step

U Beauty Resurfacing Flash Peel Face Mask with Glycolic Acid + Hydroxy Acids

This mask is designed for a quick, impactful exfoliation. It uses a blend of acids to resurface the skin, aiming for brighter, smoother, and more youthful-looking results after a single use. It's positioned as a potent treatment for those seeking visible improvements in texture and tone.

Sephora price

$188.00

Price matters most when you are trying to learn whether this lane belongs in your routine without turning the test into a luxury gamble.

Sephora reviews

4.8 / 5

About 127 reviews on the current Sephora source, so there is real volume behind the reputation.

Shoppers keep mentioning

Good for: Dark spotsHyaluronic AcidGood for: Uneven TextureGood for: Anti-AgingAHA/Glycolic AcidSalicylic AcidUneven TextureUneven Skin Toneand Dullness

These are the shopper themes that keep showing up around this listing and shape why people open it in the first place.

Glass take

4.8 / 5 overall fit

A potent weekly treatment for noticeable brightening and texture improvement, but not for daily use or very sensitive skin.

U Beauty Resurfacing Flash Peel Face Mask with Glycolic Acid + Hydroxy Acids

Sephora snapshot refreshed April 23, 2026

Price, rating, review count, and source status come from Sephora. Glass adds the routine fit, overlap risk, and what to compare next.

View Sephora

What Sephora says

What this product is supposed to do

A first-of-its-kind rapid chemical exfoliant designed to exfoliate and balance skin for visible brightening, anti-aging results after just one use.

NormalDryCombinationand OilyUneven TextureUneven Skin Toneand Dullness

Apply once a week to clean, dry skin on the face and neck, avoiding direct eye contact and sensitive or flaky-skin areas.

Leave on for up to 15 minutes for best results, then rinse thoroughly.

For new users, leave on for five minutes and gradually increase time until skin acclimates.

A patch test is recommended, especially if you have sensitive skin. Apply a small amount of product to the forearm, face, or neck area to confirm compatibility.

If you have sensitive skin, minimize skin contact time during initial application, use for fewer minutes, and build up to longer contact time with later applications.

It’s normal to feel a mild tingle upon application—that means it’s working.

What Glass adds

What actually matters before you buy it

This is a powerful weekly exfoliant that delivers on its promise of brighter, smoother skin. Its strength means it's best reserved for once-a-week use and not suitable for those with compromised skin barriers or extreme sensitivity. It's a good option for those who want a noticeable 'reset' for their skin.

Immediate Radiance

Many users report a noticeable glow and smoother skin texture after just one application, making it a go-to for special occasions.

Potency and Sensitivity

While effective, the strong acid blend means some users with sensitive skin experience tingling or redness, highlighting the importance of patch testing and gradual introduction.

Best for

When this is a smart buy

Dull skin
Uneven texture
Visible pores
Those seeking anti-aging benefits

Skip if

When this is the wrong lane

Your skin is currently very sensitive or irritated
You have a compromised skin barrier
You are new to exfoliating acids and have not patch-tested
You prefer gentle, daily exfoliants

Routine fit

How to incorporate this powerful peel

This is a weekly treatment. Apply it to clean, dry skin, avoiding the eye area. Start with a shorter leave-on time (5 minutes) and gradually increase to 15 minutes as your skin tolerates it. Always rinse thoroughly. It's crucial to patch test first, especially if you have sensitive skin. Do not use this on the same night as other strong actives like retinoids or other exfoliants to avoid over-exfoliation.

Why it works

Where it earns the slot and where it does not

The useful question is not whether this product is good in a vacuum. It is whether it makes your routine easier to run or just adds one more bottle with a familiar ingredient on it.

What it actually does well

Potent exfoliation for visible results
Addresses dullness and uneven texture effectively
Contains a blend of AHAs and BHAs
Brightens and smooths skin after one use

Where it starts to feel redundant

Can be too strong for sensitive skin
Requires careful usage (once a week, patch test)
High price point
Potential for irritation if overused

Routine fit

Where it belongs in the stack

Weekly Treatment

Use this mask once a week. It's best applied in the evening after cleansing and before any serums or moisturizers. Ensure your skin is completely dry before application. Do not use more than once a week.

Glass rating

How this formula scores in real life

4.8/ 5 overall

A potent weekly treatment for noticeable brightening and texture improvement, but not for daily use or very sensitive skin.

Routine fit

4.5 / 5

Best used once a week as a dedicated treatment step, not for daily application.

Ingredient effectiveness

4.8 / 5

The blend of AHAs and BHAs delivers visible exfoliation and brightening.

Full ingredient breakdown

Every ingredient, what it does, and whether I care

Solvent

Aqua (Water/Eau)

Badness

0.0 / 10

The base liquid for the formulation.

Usually helps with

All skin types

Watch for

None

Active

Glycolic Acid

Badness

3.0 / 10

A powerful AHA that exfoliates the skin, helping to improve texture, tone, and radiance. Can cause stinging or irritation for some.

Usually helps with

Dullness, uneven texture, fine lines

Watch for

Stinging, redness, peeling, especially for sensitive skin or with overuse.

pH Adjuster

Sodium Hydroxide

Badness

1.0 / 10

Used to adjust the pH of the formula, often to optimize the efficacy of acids.

Usually helps with

All skin types (in proper concentration)

Watch for

Can be irritating if pH is too high or low.

Solvent

Dipropylene Glycol

Badness

2.0 / 10

A solvent and humectant that can help other ingredients penetrate the skin. Can be a mild irritant for some.

Usually helps with

All skin types

Watch for

Potential for mild irritation in sensitive individuals.

Soothing Agent

Aloe Barbadensis Leaf Juice

Badness

0.0 / 10

Known for its soothing and hydrating properties, it can help calm the skin.

Usually helps with

All skin types, especially irritated or dry skin

Watch for

None

Surfactant

Cocamidopropyl Betaine

Badness

2.0 / 10

A mild cleansing agent that can also act as a foam booster. Can be a contact allergen for some.

Usually helps with

All skin types

Watch for

Potential for allergic reactions in sensitive individuals.

Humectant

Propanediol

Badness

1.0 / 10

A humectant that draws moisture to the skin, improving hydration and texture.

Usually helps with

All skin types

Watch for

None

Humectant

Betaine

Badness

0.0 / 10

A naturally derived humectant that helps skin retain moisture.

Usually helps with

All skin types

Watch for

None

Humectant

Pentylene Glycol

Badness

1.0 / 10

A humectant that also has antimicrobial properties, helping to preserve the formula.

Usually helps with

All skin types

Watch for

None

Soothing Agent

Panthenol

Badness

0.0 / 10

Also known as Vitamin B5, it's a humectant with soothing and anti-inflammatory properties.

Usually helps with

All skin types, especially dry or irritated

Watch for

None

Active

Citric Acid

Badness

2.0 / 10

An Alpha-Hydroxy Acid (AHA) that helps exfoliate and brighten the skin. Can be mildly irritating.

Usually helps with

Dullness, uneven tone

Watch for

Mild stinging or irritation, especially in higher concentrations.

Active

Tartaric Acid

Badness

2.0 / 10

An AHA that aids in exfoliation and has antioxidant properties.

Usually helps with

Dullness, uneven tone

Watch for

Mild stinging or irritation.

Emollient

Caprylic/Capric Triglyceride

Badness

0.0 / 10

A skin-conditioning agent derived from coconut oil and glycerin, it helps to replenish the skin's surface.

Usually helps with

All skin types

Watch for

None

Active

Salicylic Acid

Badness

3.0 / 10

A Beta-Hydroxy Acid (BHA) that exfoliates inside pores, helping to clear congestion and reduce breakouts. Can be drying.

Usually helps with

Acne-prone skin, oily skin, blackheads

Watch for

Dryness, peeling, irritation, especially when combined with other exfoliants.

Humectant

Sodium Hyaluronate

Badness

0.0 / 10

A form of hyaluronic acid that attracts and holds moisture, plumping the skin.

Usually helps with

All skin types, especially dry or dehydrated

Watch for

None

Thickener

Xanthan Gum

Badness

0.0 / 10

A common thickening agent that also helps stabilize emulsions.

Usually helps with

All skin types

Watch for

None

Preservative Booster

Ethylhexylglycerin

Badness

1.0 / 10

A skin-conditioning agent with antimicrobial properties, often used to enhance preservative efficacy.

Usually helps with

All skin types

Watch for

None

Antioxidant

Ubiquinone

Badness

1.0 / 10

Also known as CoQ10, it's an antioxidant that helps protect skin from environmental damage.

Usually helps with

Mature skin, all skin types

Watch for

None

Chelating Agent

Tetrasodium Glutamate Diacetate

Badness

0.0 / 10

A chelating agent that helps improve the stability and performance of the formula.

Usually helps with

All skin types

Watch for

None

Soothing Agent

Hydroxyphenyl Propamidobenzoic Acid

Badness

0.0 / 10

A synthetic compound that mimics avenanthramides found in oats, known for its soothing and anti-irritant properties.

Usually helps with

Sensitive skin, irritated skin

Watch for

None

Antioxidant

Vaccinium Myrtillus Fruit Extract

Badness

0.0 / 10

Derived from blueberries, it's rich in antioxidants that help protect the skin.

Usually helps with

All skin types

Watch for

None

Exfoliant

Saccharum Officinarum (Sugarcane) Extract

Badness

1.0 / 10

A natural source of glycolic acid, it aids in exfoliation.

Usually helps with

Dullness, uneven texture

Watch for

Potential for mild irritation.

Preservative

Sodium Benzoate

Badness

1.0 / 10

A common preservative that prevents microbial growth. Can be irritating for some.

Usually helps with

All skin types

Watch for

Potential for irritation or allergic reactions in sensitive individuals.

Preservative

Potassium Sorbate

Badness

1.0 / 10

A preservative used to inhibit the growth of mold, yeast, and fungi.

Usually helps with

All skin types

Watch for

None

Antioxidant

Citrus Limon (Lemon) Fruit Extract

Badness

1.0 / 10

Contains Vitamin C and antioxidants, can have mild brightening and astringent properties. Can be photosensitizing.

Usually helps with

Dullness, oily skin

Watch for

Photosensitivity, potential for irritation.

Antioxidant

Citrus Aurantium Dulcis (Orange) Fruit Extract

Badness

1.0 / 10

Rich in Vitamin C and antioxidants, can help brighten and protect the skin. Can be photosensitizing.

Usually helps with

Dullness, uneven tone

Watch for

Photosensitivity, potential for irritation.

Antioxidant

Ascorbyl Palmitate

Badness

1.0 / 10

A fat-soluble form of Vitamin C, it acts as an antioxidant.

Usually helps with

All skin types

Watch for

None

Exfoliant

Acer Saccharum (Sugar Maple) Extract

Badness

1.0 / 10

A natural source of AHAs, contributing to exfoliation.

Usually helps with

Dullness, uneven texture

Watch for

Potential for mild irritation.

Antioxidant

Sodium Ascorbyl Phosphate

Badness

1.0 / 10

A stable, water-soluble form of Vitamin C that acts as an antioxidant and can help brighten skin.

Usually helps with

All skin types, acne-prone skin

Watch for

None

Humectant

Glycerin

Badness

0.0 / 10

A classic humectant that draws water into the skin, keeping it hydrated and soft.

Usually helps with

All skin types

Watch for

None

Emollient

Jojoba Esters

Badness

0.0 / 10

Derived from jojoba oil, these esters help to soften and smooth the skin.

Usually helps with

All skin types

Watch for

None

Emollient

Helianthus Annuus (Sunflower) Seed Wax

Badness

0.0 / 10

A wax derived from sunflower seeds, used to provide texture and emollience.

Usually helps with

All skin types

Watch for

None

Emollient

Linolenic Acid

Badness

0.0 / 10

An essential fatty acid that helps maintain the skin barrier.

Usually helps with

All skin types

Watch for

None

Emollient

Linoleic Acid

Badness

0.0 / 10

An essential fatty acid that helps maintain the skin barrier and improve hydration.

Usually helps with

All skin types

Watch for

None

Antioxidant

Tocopherol

Badness

0.0 / 10

Vitamin E, a fat-soluble antioxidant that protects skin from oxidative stress.

Usually helps with

All skin types

Watch for

None

Surfactant

Decyl Glucoside

Badness

1.0 / 10

A mild, plant-derived surfactant used for cleansing.

Usually helps with

All skin types

Watch for

None

Thickener

Caesalpinia Spinosa Gum

Badness

0.0 / 10

A natural gum used as a thickening and stabilizing agent.

Usually helps with

All skin types

Watch for

None

Emollient

Helianthus Annuus (Sunflower) Seed Oil

Badness

0.0 / 10

A rich emollient and antioxidant that helps moisturize and protect the skin.

Usually helps with

All skin types

Watch for

None

Antioxidant

Retinyl Palmitate

Badness

2.0 / 10

A milder form of Vitamin A, it acts as an antioxidant. Less potent than retinol for anti-aging.

Usually helps with

All skin types

Watch for

Can cause mild irritation or photosensitivity in some individuals.

Humectant

Butylene Glycol

Badness

1.0 / 10

A humectant that helps attract moisture to the skin and improves product texture.

Usually helps with

All skin types

Watch for

Can be a mild irritant for very sensitive skin.

Thickener

Acacia Senegal Gum

Badness

0.0 / 10

A natural gum used as a thickening and stabilizing agent.

Usually helps with

All skin types

Watch for

None

Humectant

Caprylyl Glycol

Badness

1.0 / 10

A humectant that also has antimicrobial properties, helping to preserve the formula.

Usually helps with

All skin types

Watch for

None

Humectant

Polyglycerin-3

Badness

0.0 / 10

A humectant that helps attract and retain moisture in the skin.

Usually helps with

All skin types

Watch for

None

Emollient

Acacia Decurrens Flower Wax

Badness

0.0 / 10

A wax derived from acacia flowers, used to provide texture and emollience.

Usually helps with

All skin types

Watch for

None

Preservative

Dehydroacetic Acid

Badness

1.0 / 10

A preservative that helps prevent the growth of bacteria and fungi.

Usually helps with

All skin types

Watch for

None

Compare before you buy

The next pages that make this product more useful

A good product page should push you into the next decision, not trap you inside one product page forever. These are the cleaner next clicks.

Ingredient Checker

Check whether this product overlaps with products already in your routine.

Product directory

Browse more Sephora skincare products through the Glass product directory.

FAQ

The fast answers people actually need

How often should I use the U Beauty Resurfacing Flash Peel?

This is a potent weekly treatment. It is recommended to use it once a week to avoid over-exfoliation and potential irritation.

Is this mask suitable for sensitive skin?

While it contains soothing ingredients like Aloe Vera, the high concentration of acids can be too intense for very sensitive skin. A patch test is strongly recommended, and new users should start with a shorter application time.

What are the main benefits of this mask?

The mask is designed to provide rapid chemical exfoliation, leading to visible brightening, improved skin texture, and anti-aging results after just one use.

See If This Is Compatible With My Skin