Olive Young Low-pH Cleanser Picks: From Round Lab Dokdo to bttr

bttr's Hydra Barrier Cleansing 336 Milk to Foam 150g sells for 28,100 won on the brand's own site (checked 2026-09-14). Since the milk texture turns into foam on contact with water in a one-step process, the first thing to decide when choosing a cleanser for a trip is whether you want a formula that requires double cleansing. Among the low-pH cleansers sold at Olive Young and drugstores, Round Lab 1025 Dokdo Cleanser, COSRX Low pH Good Morning Gel Cleanser, and Etude Soon Jung pH 6.5 Whip Cleanser are steady sellers.

bttr Hydra Barrier Cleansing 336 Milk to Foam 150g

The Hydra Barrier Cleansing 336 Milk to Foam 150g is sold for 28,100 won on bttr's official site (checked 2026-09-14).

• It contains six types of ceramides (NP, AP, AS, NG, NS, EOP) and three types of hyaluronic acid (sodium hyaluronate, hydrolyzed hyaluronic acid, sodium acetylated hyaluronate), a moisturizing formula designed to reduce tightness after cleansing.
• It foams without sulfate cleansers, using amino acid based (sodium cocoyl alaninate), coco glucoside type, and amphoteric (disodium cocoamphodiacetate) surfactants instead (44 total ingredients, per Glowpick's listing).
• Because the milk turns into foam in a one-step process, it removes sunscreen and makeup in a single step without double cleansing (per the product page).
• It has 692 reviews and a 4.6 rating on the brand's own site (checked 2026-09-14).

Note that the 44-ingredient list includes fragrance, so this is not a fragrance-free product, and it also contains salicylic acid and titanium dioxide (per Glowpick's ingredient listing, checked 2026-08-28).

For travelers who want to cut down on double cleansing and finish both cleansing and makeup removal with a single product, the 336 Milk to Foam is a good fit.

Round Lab 1025 Dokdo Cleanser 150ml

The 1025 Dokdo Cleanser 150ml has a list price of 13,000 won on Round Lab's official site and is labeled as low-pH at pH 5.5 (checked September 2026).

The same product is also sold on Olive Young (product number A000000151185). However, Olive Young's own product page only states "low-irritation/low-pH" without listing a pH number, and the 5.5 figure appears only in Round Lab's own product description.

COSRX Low pH Good Morning Gel Cleanser 150ml

The Low pH Good Morning Gel Cleanser 150ml has a list price of 9,900 won on Olive Young, discounted to 7,110 won (checked September 2026).

COSRX's official site lists this product's pH as 5.3±1.0. Olive Young Korea carries only the 150ml size, with no larger size listed.

Etude Soon Jung pH 6.5 Whip Cleanser 150ml

The Soon Jung pH 6.5 Whip Cleanser 150ml sells for 8,900 won on 11st (checked September 2026).

The pH of 6.5 is built into the product name itself. Even for the same 150ml size, list prices vary by retailer. The Musinsa set with a 150ml main product plus a 150ml refill costs 17,420 won, while the GS Shop 250ml large size has a list price of 21,000 won, discounted to 14,910 won.

Price and pH Comparison Table

Even with low-pH cleansers, using them three or more times a day can strip away the skin's sebum barrier too often, so the standard practice is to use them twice a day, once in the morning and once at night.

Sources: bttr Hydra Barrier Cleansing 336 Milk to Foam 150g product page

Sources: Glowpick, Hydra Barrier Cleansing 336 Milk to Foam ingredient list

Sources: Round Lab, official 1025 Dokdo Cleanser 150ml product page

Sources: Olive Young, Round Lab 1025 Dokdo Cleanser 150ml product page

Sources: Olive Young, COSRX Low pH Good Morning Gel Cleanser 150ml product page

Sources: COSRX official site, Low pH Good Morning Gel Cleanser product page

Sources: 11st, Etude Soon Jung pH 6.5 Whip Cleanser 150ml product page

Sources: Musinsa, Etude Soon Jung pH 6.5 Whip Cleanser main product plus refill set product page

Sources: GS Shop, Etude Soon Jung pH 6.5 Whip Cleanser 250ml product page