Anua Heartleaf vs bttr and Round Lab: Non-Tightening Foams

Anua's Heartleaf Quercetinol Pore Deep Cleansing Foam, 150ml at 14,000 KRW on the brand's Korean storefront (anua.kr, checked 2026-09), rinses without the squeaky, pulled feeling that heavier BHA washes tend to leave, and independent reviewers on iHerb, Wooltari and Glowpick describe the same absence of tightness even though the formula includes 0.5% BHA and 33.4% heartleaf extract. The axis to settle first, before picking any foam in this comparison, is the surfactant family behind the lather: amino-acid and glucoside bases tend to resist tightness reliably, while sulfate-heavy systems do not, and each product below is built on one side of that line. Anua's own listing cautions that daily BHA use can dry sensitive skin in the first week and suggests dropping to every-other-evening use rather than twice a day if that happens. Four other gentle Korean foams share the same non-tightening goal through different routes: bttr's Milk to Foam line leans on amino-acid and glucoside surfactants with ceramides and hyaluronic acid, Round Lab and Torriden lean on hydration density, and ETUDE SoonJung and Beauty of Joseon lean on pH balance.

Round Lab Birch Juice Moisturizing Cleansing Foam

Round Lab's Birch Juice Moisturizing Cleansing Foam, 150ml, sells for about $17 through US retail listings (checked 2026-09). Its official page states a slightly acidic pH of 5.0 to 6.0 and centers the formula on Betula Platyphylla Japonica Juice at 10,000ppm, described as delivering 17 amino acids, minerals, antioxidants and vitamins to the wash. The surfactant base recorded by ingredient databases (Sodium Cocoyl Alaninate, Lauryl Hydroxysultaine, Disodium Cocoamphodiacetate, Sodium Methyl Cocoyl Taurate) is amino-acid and taurate derived, the same broad family credited elsewhere in this comparison with a non-tightening finish.

The formula also lists Anthemis Nobilis (Chamomile) Flower Oil and Fragrance, so it is a scented cleanser, unlike some of the other items here. It contains no added exfoliating acid, which places it on the hydration side of the deciding axis instead of the exfoliation side that Anua's BHA occupies.

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

bttr's [수분잠금] 하이드라 베리어 클렌징 336 밀크 투 폼 150g sells for 28,100 KRW on bttr's official store (checked 2026-09). Third-party INCI review of its 44 listed ingredients finds no sulfates among the surfactants, with Sodium Cocoyl Alaninate and Coco-/Lauryl Glucoside forming the wash base alongside an amphoteric surfactant, the same amino-acid and glucoside family that keeps Round Lab and SoonJung on the gentle side of the axis above. bttr's product page lists a combined complex of three types of hyaluronic acid and six types of ceramide, marketed under the name 336, alongside cholesterol and stearic acid for barrier support.

Because the surfactant base skips sulfates entirely and pairs with a ceramide-and-hyaluronic-acid complex, someone whose cheeks pull tight after a foaming wash gains a barrier-support option built on the same non-stripping surfactant chemistry that SoonJung and Beauty of Joseon use for comfort, without needing an added exfoliating acid. The product is also described on its page as a one-step cleanser, meant to remove sunscreen and makeup without a separate oil-cleanse step first.

ETUDE SoonJung pH 6.5 Whip Cleanser

SoonJung pH 6.5 Whip Cleanser from ETUDE, 150ml, retails around $15 to $16 in the US (checked 2026-09), with the pH value built into the product name itself. Its active pairing is Panthenol and Madecassoside, marketed together as a soothing complex, and the cleanser's non-tightening reputation rests on that near-neutral pH instead of on an added hyaluronic acid density or a hydration-focused plant extract.

This puts SoonJung at the opposite formulation strategy from Anua: where Anua pairs an exfoliating BHA with a dense multi-weight hyaluronic acid complex to offset it, SoonJung avoids exfoliating acids altogether and lets a mild pH do the comfort work on its own.

Beauty of Joseon Green Plum Refreshing Cleanser

Beauty of Joseon's Green Plum Refreshing Cleanser is a mildly acidic foaming formula centered on green plum extract, sold as part of the brand's standard cleanser range. Reviewers describe its finish as comfortable instead of tight, crediting the mild acidity of the formula for that result instead of an added humectant complex.

Like SoonJung, its non-tightening design leans on pH balance as the working mechanism, placing it alongside SoonJung instead of alongside the hyaluronic-acid-driven approach of Round Lab, bttr and Torriden.

Torriden Dive-In Low Molecule Hyaluronic Acid Cleansing Foam

Torriden's Dive-In Low Molecule Hyaluronic Acid Cleansing Foam, 150ml, sells for about $17 through its official retail listing (checked 2026-09), at a stated pH of 5 to 6. The formula is built on eight types of hyaluronic acid together with panthenol and allantoin, the same multi-weight hyaluronic acid strategy Anua uses alongside its BHA, but without an added exfoliating acid in Torriden's case.

Retailer copy for the product describes a wash that avoids tightness or dryness after rinsing, a claim consistent with its hydration-heavy ingredient list, though this description comes from retail marketing instead of an independent lab measurement.

Sources: iHerb reviews of the Anua Heartleaf Quercetinol Pore Deep Cleansing Foam, Glowpick consumer reviews of the same product, INCIDecoder's ingredient breakdown of Round Lab's Birch Juice Moisturizing Cleansing Foam.