Step 01 · Cleanse

Cleansing Serum — Collagen

Name: Cleansing Serum — Collagen
Brand: Youlief
SKU: YLF-CS-COL
Price: 22 USD
Availability: InStock

100 mL / 3.38 fl. oz.

$22

A cushiony cleanse with a supple after-feel.

A silky, low-foam cleanser with a blend of collagen-derived ingredients, vitamin B12, glycerin and hyaluronic acid. It removes daily buildup while skin feels smooth, soft and comfortably conditioned.

Cushiony serum textureSoft, low-foam daily cleanseSupple, comfortable after-feel

In stock — ships across the United States now

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

What it does

Cushiony serum texture

Soft, low-foam daily cleanse

Supple, comfortable after-feel

Blush-pink tone from vitamin B12

How it works

Inside the formula

Collagen-derived ingredients

Conditioning ingredients that leave skin feeling smooth and supple after rinsing.

Vitamin B12

Gives the serum its signature blush-pink tone.

Glycerin & hyaluronic acid

Keep the cleanse cushiony and comfortable.

Testing

Tested

A primary skin-irritation test was completed on sensitive-skin subjects at an independent testing centre.

Test facility: Corederm Co., Ltd. Non-clinical Testing Center
Test number: CDS-2500-012-3(2)
Test period: October – November 2025
Subjects: 32 adults aged 20–55

Watch

See it in use

The one-step cleansing serum, in use.

Loved in Korea

Loved in Korea — from our creator campaigns

Videos produced with creators as part of paid campaigns in Korea. Individual experiences; not a promise of typical results.

How to use

Using Cleansing Serum — Collagen

Massage over damp face with wet hands, then rinse thoroughly. Use morning and evening. For heavy or waterproof makeup, use a dedicated first-step remover before cleansing.

Full ingredient list (INCI)

Water, Glycerin, Coco-Glucoside, Lauryl Glucoside, Lauryl Hydroxysultaine, Sodium Cocoyl Alaninate, Butylene Glycol, Disodium Cocoamphodiacetate, 2,3-Butanediol, Coco-Betaine, Sodium Chloride, Glycolipids, Isopentyldiol, Betaine, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Glyceryl Oleate, Hydroxyacetophenone, Sorbitol, Propanediol, Hexylene Glycol, Caprylyl Glycol, 1,2-Hexanediol, Citric Acid, Disodium EDTA, Ethylhexylglycerin, Sodium Hyaluronate, Mannitol, Cyanocobalamin, Hydrolyzed Collagen, Collagen Extract, Tocopherol, Hydrogenated Palm Glycerides Citrate, Collagen Amino Acids, Collagen, Soluble Collagen, Soluble Collagen Crosspolymer, Potassium Myristoyl Hydrolyzed Collagen, Rosin Hydrolyzed Collagen, Atelocollagen, Glycyrrhetinic Acid, Fragrance

Specifications

Size: 100 mL / 3.38 fl. oz.
SKU: YLF-CS-COL
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.