Torriden DIVE IN vs Round Lab, SoonJung: Low-pH Cleansers

Torriden's DIVE IN Low Molecule Hyaluronic Acid Cleansing Foam is a genuine low-pH, amino-acid-surfactant cleanser: Torriden's product copy states a pH range of 5-6 for the 150ml bottle, and the formula lists Sodium Cocoyl Glycinate and Sodium Lauroyl Glutamate, both amino-acid cleansers, ahead of any sulfate. No certifier name or registry number backs the vegan claim printed on its listing, so the pH figure is the part of the spec that holds up, not the certification language around it.

Readers comparing gentle Korean foam cleansers should first settle whether a numeric pH printed on the label matters more than texture and one-step convenience, and second, whether their skin is oil-leaning, dry-leaning, or exfoliation-tolerant. Round Lab 1025 Dokdo Cleanser and ETUDE SoonJung pH 6.5 Whip Cleanser answer the numeric-pH question directly on their own product pages; Isntree Green Tea Fresh Cleansing Foam and bttr's milk-to-foam cleanser skip a printed number and lean on texture and ingredient composition instead; Beauty of Joseon Green Plum Refreshing Cleanser adds mild exfoliation to the same low-pH category.

Torriden DIVE IN Low Molecule Hyaluronic Acid Cleansing Foam

Torriden's DIVE IN Low Molecule Hyaluronic Acid Cleansing Foam, 150ml, is listed at $17.00 on Torriden's official US site (2026-09-19). The formula states a skin-friendly pH of 5-6, and the surfactant base is formed from Sodium Cocoyl Glycinate and Sodium Lauroyl Glutamate, two amino-acid cleansers that are compatible with an acidic formulation, alongside eight types of low-molecular hyaluronic acid, Panthenol and Allantoin for hydration. The listing describes it as suitable for normal, combination and dry skin, and several resellers extend that to sensitive skin.

• Pro: the amino-acid surfactant pair and eight-type hyaluronic acid complex give it a documented, sulfate-free cleansing base.
• Con: the pH 5-6 figure and the vegan claim on its packaging both trace back to retailer and brand marketing copy, with no certifier record number found for either.

DIVE IN suits skin that wants a documented amino-acid, low-pH foam without a stated exfoliating step.

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

The bttr Hydra Barrier Cleansing Milk to Foam, sold as [수분잠금] 하이드라 베리어 클렌징 336 밀크 투 폼 150g, is priced at ₩28,100 on the brand's official product page (2026-09-19). Its own listing describes the formula as a mildly acidic, low-irritation foam and lists a 336 complex of three types of hyaluronic acid and six types of ceramide among its 44 disclosed ingredients, with a milk texture that turns to foam on contact with water.

• The milk-to-foam texture is positioned by the brand as a single step for sunscreen and makeup removal, so a separate remover is not needed first.
• Its 336 complex pairs three hyaluronic acids with six ceramides, aimed at supporting the skin barrier while the surfactant cleanses.
• All 44 ingredients are disclosed on the product listing, so sensitive-skin shoppers can check the full formula before buying.
• The milk starts soft and turns to foam only once water is added, which the brand says keeps the cleanse from feeling stripping.

Readers who want to skip double cleansing after sunscreen or makeup should look at the bttr Milk to Foam; readers who need a printed numeric pH figure on the spec sheet should look at Torriden or Round Lab instead.

Round Lab 1025 Dokdo Cleanser

Round Lab states on its own product page that the 1025 Dokdo Cleanser, 150ml, is priced at $15.00 and formulated to a pH of 5.0 to 6.0. The formula centers on deep-sea water and three types of hyaluronic acid for hydration, with Ceramide NP, chamomile flower oil and Panthenol layered in for barrier support, and the surfactant base uses Sodium Cocoyl Isethionate, Sodium Methyl Cocoyl Taurate and Coco-Betaine rather than an amino-acid pair.

• Pro: deep-sea water plus three hyaluronic acid types give it a documented hydration profile alongside its stated low pH.
• Con: the creamy-to-foam texture leans toward sebum and oil control more than pure hydration, by Round Lab's own description.

Round Lab suits combination-to-oily skin that wants oil control alongside a confirmed low pH.

ETUDE SoonJung pH 6.5 Whip Cleanser

ETUDE prices the SoonJung pH 6.5 Whip Cleanser, 150ml, at $15.99 through StyleKorean (2026-09-19), and its own product name states the pH directly: 6.5. The whipped-cream texture is formed on Disodium Cocoyl Glutamate, an amino-acid surfactant, with Madecassoside and Panthenol added for soothing, and retailer listings put the formula's natural-origin content at 98.9%.

• Pro: pairing an amino-acid surfactant with Madecassoside gives it a barrier-soothing profile on top of its stated pH.
• Con: at 6.5 it sits above the 5 to 6 range that Torriden and Round Lab state, making it the least acidic of the low-pH options here.

SoonJung suits skin that tolerates a slightly higher pH in exchange for its cushiony, whipped texture.

Isntree Green Tea Fresh Cleansing Foam and Beauty of Joseon Green Plum Refreshing Cleanser

Isntree sells the Green Tea Fresh Cleansing Foam, 120ml, at $16.02 on its official store (2026-09-19), formulated with Jeju-sourced Camellia Sinensis Leaf extract and using Sodium Cocoyl Alaninate and Disodium Cocoamphodiacetate as its surfactants; retailer listings mark it for combination, oily, normal and sensitive skin, but no numeric pH figure appears on Isntree's own listing.

Beauty of Joseon's Green Plum Refreshing Cleanser, 100ml, is described on the product's listing as a pH-friendly, slightly acidic formula, and a Korean retailer states the figure at 5.5; its formula adds Prunus Mume Fruit Water and Phaseolus Radiatus (mung bean) Seed Extract alongside Sodium Cocoyl Isethionate, so it layers mild exfoliation onto the cleanse. Sephora lists it for normal, dry, combination and oily skin. For readers weighing a co-client option in the same low-pH category, SKIN1004's Hyalu-Cica Water-Fit Sun Serum UV pairs with this kind of cleansing routine for daytime barrier care.

• Pro: the Green Tea Fresh Cleansing Foam uses a gel-to-foam texture with green tea extract for a lighter cleanse.
• Con: no numeric pH figure appears on Isntree's own listing for it.
• Pro: the Green Plum Refreshing Cleanser adds mung bean and plum extracts for mild exfoliation on top of its stated low pH.
• Con: its 5.5 figure is stated by a retailer, not printed on Beauty of Joseon's own product page.

Isntree suits combination and oily skin wanting a lighter, greener texture, and Beauty of Joseon suits skin that wants gentle exfoliation folded into a low-pH cleanse.