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Step 04 · Treat

ECW Ampoule

50 mL / 1.69 fl. oz.
$58

Layered hydration. A smoother, firmer-looking finish.

A water-gel ampoule with multiple forms of hyaluronic acid, Pseudoalteromonas ferment, niacinamide, beta-glucan and caffeine. It floods skin with lightweight moisture and leaves it looking plump, smooth and refreshed.

Immediate-feeling lightweight hydrationA plumper, smoother-looking finishBright, refreshed-looking skin
In stock — ships across the United States now

Secure checkout on Shopify, powered by Vegalab — Youlief’s distributor in the United States.

Loved in Korea. Now available in the United States.· 2 customer photos from Korea· Made in Korea
From a customer in Korea
“About ten days in. It feels hydrating and nourishing, and it's thick with plenty in the bottle so I use it liberally. My skin is moisturised and glowing. I don't reach for other ampoules any more. Do try it — it's the kind of ampoule you want to keep to yourself ^^ I'll order again when it runs out.”
노**** · 2024-03-14 · View original

Originally posted by a Youlief customer in Korea. Translated from Korean; minor edits may be made for clarity without changing meaning. Korean customer review.

What it does

Immediate-feeling lightweight hydration

A plumper, smoother-looking finish

Bright, refreshed-looking skin

Cushiony water-gel texture that layers easily

How it works

Inside the formula

Multi-weight hyaluronic acid

Several forms of hyaluronic acid layer lightweight moisture across the skin's surface, so skin looks plump and smooth rather than weighed down.

Pseudoalteromonas ferment

A marine ferment used in Korean formulas for a conditioned, refreshed-looking finish.

Niacinamide & beta-glucan

A familiar pairing that supports a bright, comfortable, well-moisturised look.

Caffeine

Leaves skin looking refreshed and awake — especially nice as a morning step.

How to use

Using ECW Ampoule

After toner, press 2–3 drops over face and neck morning and evening. Follow with moisturizer. Apply sunscreen as the final morning step.

Full ingredient list (INCI)

Water, Butylene Glycol, Glycerin, 1,2-Hexanediol, Niacinamide, Diglycerin, Propanediol, Methylpropanediol, Hydroxyethyl Cellulose, Carbomer, Tromethamine, Ethylhexylglycerin, Adenosine, Disodium EDTA, Pseudoalteromonas Ferment Extract, Sodium Hyaluronate, Beta-Glucan, Caprylyl Glycol, Hydrolyzed Hyaluronic Acid, Sodium Acetylated Hyaluronate, Caffeine, Tocopherol

Specifications

Size: 50 mL / 1.69 fl. oz.
SKU: YLF-ECW
Made in South Korea.
Distributed in the United States by Vegalab LLC.

Caution

For external use only. Avoid direct contact with the eyes; rinse with water if contact occurs. Discontinue use if redness, itching or discomfort develops and consult a physician if it persists. Do not apply to broken or irritated skin. Store away from direct sunlight and keep out of reach of children.

Shipping & returns

Ships across the United States via USPS — $10 flat, free on orders of $100 or more. Unopened, unused products may be returned within 14 days of delivery for a refund of the product price — email us for a return authorization first. Opened or used products cannot be returned for hygiene reasons. See our Shipping & Returns page for full details.