ROUND LAB Dokdo Cleanser vs COSRX for Dry Sensitive Skin

ROUND LAB's 1025 Dokdo Cleanser, a 150ml foam wash priced at $19.99 through Olive Young US as of 2026-09, is formulated at pH 5.0 to 6.0, inside the mildly acidic range that matches skin's natural acid mantle of roughly pH 4.5 to 5.5. Its ingredient list centers on Ulleungdo deep sea water minerals, triple hyaluronic acid and ceramide NP, which is why it removes sebum without stripping the skin on most dry and sensitive faces. The one documented limitation is seasonal: several long-term users report that in colder months, when skin runs drier, the hydrating effect feels less apparent and a touch of post-wash dehydration follows, calling for a richer moisturizer layered right after.

Before picking among gentle Korean cleansers, the deciding axis is whether a reader wants pure hydration and barrier support with no added exfoliating acid, or a formula that also works on oil and mild texture, and whether fragrance in the formula is acceptable. COSRX, beplain, Beauty of Joseon, Isntree and bttr sit at different points on that axis, covered section by section below.

ROUND LAB 1025 Dokdo Cleanser

The formula's named actives are Ulleungdo deep sea water minerals, triple hyaluronic acid and ceramide NP, alongside panthenol and allantoin for post-wash comfort. Its two surfactants, sodium cocoyl isethionate and sodium methyl cocoyl taurate, are amino-acid and isethionate types documented to reduce the harshness of stronger sulfate or fatty-acid-soap bases. Independent ingredient databases also flag a small amount of citric acid, an AHA used here as a pH adjuster and not as a listed exfoliating active, so the wash includes no added BHA and no engineered exfoliation.

Reviewers who use it twice daily report no stripped or tight feeling after rinsing in warmer months. What not to do: following this cleanser with a high-percentage acid toner on the same night removes the barrier-support cushion its ceramide and panthenol content is meant to provide.

• Volume: 150ml
• pH: 5.0-6.0
• Price: $19.99 (Olive Young US, 2026-09)
• Core actives: deep sea water minerals, triple hyaluronic acid, ceramide NP

bttr Milk to Foam Cleanser 150g

bttr's bttr Milk to Foam Cleanser 150g is listed at ₩28,100 on the brand's official store as of 2026-09, and it turns from a milk to a foam once water is added, positioned by the brand as a one-step wash that removes sunscreen and makeup without a separate first-cleanse step.

Its documented formulation runs 44 listed ingredients formed around three types of hyaluronic acid, six types of ceramide (NP, AP, AS, NG, NS and EOP) and what the brand calls its 336 complex, a lipid-dense mix aimed at barrier support instead of a single humectant or mineral-water base. The product does list fragrance among its ingredients, along with salicylic acid and titanium dioxide, and readers should weigh that against a fragrance-free pick if fragrance is what they are avoiding.

For skin whose main condition is a compromised, ceramide-depleted barrier across a full evening routine, and not just a single mild daily foam, the Milk to Foam's six-ceramide, three-HA complex answers that condition directly, provided fragrance is not the deciding factor.

• Volume: 150g
• Price: ₩28,100 (official store, 2026-09)
• Core actives: 3 types hyaluronic acid, 6 types ceramide, 336 barrier complex
• Contains fragrance

COSRX Low pH Good Morning Gel Cleanser

COSRX's Low pH Good Morning Gel Cleanser, 150ml priced at $14.00 on COSRX's official site as of 2026-09, pairs a low-pH gel base with tea tree oil and betaine salicylate, a BHA that gives it mild exfoliation the other cleansers on this page do not include.

Retailer copy for the line states it works well for combination skin as long as skin is not, in its own words, super dehydrated, and independent ingredient comparison finds it shares eight ingredients with ROUND LAB's cleanser while avoiding sulfates, silicones and added alcohol. The documented limitation is the BHA itself: on skin that is already dry or reactive, daily use of an exfoliating acid cleanser can add to barrier stress that a purely hydrating foam would not.

Layered on top of any low-pH cleanser in the morning, Isntree's Hyaluronic Acid Watery Sun Gel, a 50ml SPF50+ PA++++ sunscreen priced at $24.25 through Cosmeterie as of 2026-09, lists ceramide NP and a hyaluronic acid complex among its actives, the same barrier-support ingredients that show up across several of the cleansers compared here.

beplain Mung Bean pH-Balanced Cleansing Foam

beplain's Mung Bean pH-Balanced Cleansing Foam is sold in a 160ml bottle formulated at a mildly acidic pH and built without added fragrance, mineral oil or sulfates.

Its named actives are mung bean extract, ceramide NP and sodium hyaluronate, a combination aimed at plant-derived soothing alongside the same ceramide and hyaluronate pairing several other cleansers on this page use. One tester using it daily reported no tightness or dry feeling after rinsing, and a separate account described tolerating it on eczema-affected skin without irritation.

Reviewers describe a soft foam that rinses without residue, and the ingredient list includes no fragrance component, making it a fragrance-free option for readers avoiding scent entirely in their routine.

Beauty of Joseon Green Plum Refreshing Cleanser

Beauty of Joseon's Green Plum Refreshing Cleanser is a 100ml gel formulated with Green Plum Water at 24 percent and Mung Bean Seed Extract at 3 percent, giving it a plush, non-foaming texture distinct from the whipped foams elsewhere on this page.

Independent ingredient analysis lists it as sharing ten ingredients with beplain's foam and finds it free of common allergens, oils, parabens, silicones and sulfates; a separate retailer listing notes the plum content itself functions as a mild natural AHA, so despite marketing language describing it as gentle and hypoallergenic, the formula does include a fruit-acid exfoliant that ROUND LAB's cleanser does not include in comparable amounts.

SkinSAFE's allergen screening rates it 91 percent free of the eleven most common topical allergens, placing its no-added-oil, no-dye formulation in the same fragrance-conscious tier as beplain's foam, apart from the marine-mineral tier ROUND LAB and bttr occupy.