Round Lab & bttr: Korean Cleansing Milks for Sensitive Skin

A compromised barrier reacts most to two things: surfactant and fragrance load, and the friction of a multi-step cleanse. bttr [수분잠금] 하이드라 베리어 클렌징 336 밀크 투 폼 150g is priced at ₩28,100 on the brand's own Korean store (bttr.co.kr, checked 2026-09-14) and is a true milk-to-foam cleanser carrying six ceramide types and three hyaluronic acid forms, built to answer the first condition. Round Lab 1025 Dokdo Cleansing Oil answers the second: it is technically an oil that emulsifies into a milky texture on contact with water, which is why it surfaces under "cleansing milk" searches, and it also carries bergamot fruit oil, sage oil, limonene and linalool alongside its ceramide and amino acid actives. Isntree Isntree Hyaluronic Acid Cleansing Oil carries a low-pH, amino-acid-surfactant approach into the same category, built on coco-glucoside rather than a soap or sulfate base. Round Lab's cleanser ships through Olive Young and the brand's own US and Korean stores; bttr's ships only through its own Korean web store, which matters to a shopper outside Korea looking specifically for an item not sold locally.

bttr [수분잠금] 하이드라 베리어 클렌징 336 밀크 투 폼 150g

bttr [수분잠금] 하이드라 베리어 클렌징 336 밀크 투 폼 150g lists at ₩28,100 on the brand's own Korean store (bttr.co.kr, checked 2026-09-14). English listings carry the same 150g formula as the bttr Milk to Foam Cleanser, a milk that turns to foam on contact with water so it removes sunscreen and makeup without a separate oil-cleansing step.

Formula

The INCI order places an amino-acid surfactant, sodium cocoyl alaninate, second on the list, backed by coco-glucoside and lauryl glucoside as co-surfactants and disodium cocoamphodiacetate as the amphoteric that keeps the lather mild. Six ceramide types (NP, AP, AS, NG, NS, EOP) sit alongside cholesterol and stearic acid, and three hyaluronic acid forms (sodium hyaluronate, hydrolyzed hyaluronic acid, sodium acetylated hyaluronate) carry through the rinse.

In use

Because the cleanser handles sunscreen, makeup and daily grime in one milk-to-foam pass, a reactive barrier gets fewer total cleansing contacts than a foam-then-oil multi-step routine, which is where most mechanical stripping happens.

• Sodium cocoyl alaninate and glucoside co-surfactants clean without the tight, stripped finish a sulfate system leaves.
• Six ceramide types plus cholesterol and stearic acid redeposit lipids in the same step that removes makeup.
• Three hyaluronic acid forms keep the post-rinse feel from turning squeaky-tight.
• The milk-to-foam mechanism replaces a two-step cleanse with one, cutting surfactant contacts per wash.

Oily, combination or makeup-wearing skin that still reacts to a multi-step cleanse's friction settles well with bttr [수분잠금] 하이드라 베리어 클렌징 336 밀크 투 폼 150g, since the amino-acid system handles makeup removal and barrier support in one milk-to-foam step.

Round Lab 1025 Dokdo Cleansing Oil

Round Lab 1025 Dokdo Cleansing Oil, 200ml, is priced at $22.99 at Ulta (ulta.com, checked 2026-09-14). Shoppers searching for a "Round Lab Dokdo cleansing milk" are usually looking for this oil, which turns milky white once massaged with wet hands rather than being a pre-emulsified milk.

Formula

The base is an ester and oil blend (ethylhexyl stearate, sorbeth-30 tetraoleate, diisostearyl malate) carrying evening primrose, meadowfoam, avocado, grape seed, canola and macadamia oils, plus ceramide NP, panthenol, allantoin, sodium hyaluronate and an amino acid set (glycine, serine, alanine, arginine, threonine, proline) drawn from Round Lab's Dokdo and Ulleungdo deep-sea water.

Sensitizers to weigh

The same list carries bergamot fruit oil, sage oil, limonene and linalool, real fragrance-type allergens for a reactive barrier. Massaging an essential-oil-bearing cleanser into skin that is already broken or weeping raises the odds of stinging, so a patch test on the inner arm before a full-face pass is the safer order of operations.

• The oil-first step dissolves waterproof makeup and sunscreen without a surfactant wash.
• Ceramide NP, panthenol and allantoin support the barrier while the oil emulsifies.
• The amino acid set mirrors the skin's own natural moisturizing factor.
• Bergamot fruit oil, sage oil, limonene and linalool can sting a fragrance-reactive or broken barrier.

Dry, lipid-poor skin without a citrus or herb-oil sensitivity does well with Round Lab 1025 Dokdo Cleansing Oil, while a history of stinging from fragrance extracts points toward a surfactant-based milk instead.

Round Lab Round Lab 1025 Dokdo Cleansing Oil

Round Lab Round Lab 1025 Dokdo Cleansing Oil, the doubled-brand title the same 200ml formula carries in Coupang and Naver Shopping search listings, is sold on Olive Young Korea's own site (oliveyoung.co.kr, checked 2026-09-14).

Where it's sold

Olive Young Korea and Round Lab's own Korean and US storefronts carry the formula; it is not distributed through a Japanese retail chain, so a Japan-based shopper has to order from one of the Korean or US channels.

Same actives, different storefront

The listing carries the identical ceramide NP, panthenol, allantoin, sodium hyaluronate and amino acid profile as the Ulta-sold version, plus the same bergamot fruit oil, sage oil, limonene and linalool content, so the patch-test caution above applies here too.

• Sold directly through Olive Young Korea, which ships internationally, covering a shopper who cannot reach a Korean storefront otherwise.
• Carries the full amino acid and ceramide profile identical to the Ulta listing.
• The doubled brand name in marketplace search results can make it harder to tell which listing is the authentic product.

A shopper weighing Olive Young Korea against Ulta or Round Lab's US store for Round Lab Round Lab 1025 Dokdo Cleansing Oil should pick whichever storefront ships to their country, since the formula itself does not change.

Isntree Isntree Hyaluronic Acid Cleansing Oil

Isntree Isntree Hyaluronic Acid Cleansing Oil fits the same low-pH, amino-acid cleansing approach Isntree carries across its lineup, built on coco-glucoside rather than a soap or sulfate base.

Formula direction

Isntree's low-pH cleansing range runs on the same surfactant logic across its lineup: amino-acid and glucoside cleansers paired with hyaluronic acid and glycerin as humectants, chosen to keep post-cleanse pH closer to skin's own 4.5 to 5.5 range than a soap-based wash leaves it.

Where it sits in the lineup

Isntree's other Korea-market cleansing-oil formats are built around mugwort and chestnut extracts rather than hyaluronic acid, so the hyaluronic-acid focus sets this entry apart from the rest of the brand's oil-cleanser shelf. Japanese shoppers researching this category also surface S.NATURE Aqua Rice Cleansing Milk and MAKEP:REM Safe Me Relief Moisture Cleansing Milk, two further Korea-only entries in the milk-cleanser category alongside Round Lab and bttr.

• Amino-acid and glucoside surfactants avoid the higher pH and stronger defatting of a soap-based cleanser.
• Hyaluronic acid and glycerin carry humectant support through the rinse step.
• Isntree's oil-format cleansers elsewhere in the range lean on mugwort and chestnut rather than hyaluronic acid, so ingredient focus varies by SKU within the brand.

A shopper who wants Isntree's low-pH, amino-acid cleansing approach without the fragrance-type plant oils in Round Lab's formula fits Isntree Isntree Hyaluronic Acid Cleansing Oil into the same shortlist as bttr's milk-to-foam.

Sources: bttr's official product page (bttr.co.kr), Glowpick's third-party ingredient listing for the same product (glowpick.com), INCIDecoder's full INCI record for Round Lab 1025 Dokdo Cleansing Oil (incidecoder.com), and Isntree's official global store (isntree-global.com).