Deep Green Tea Cleansing Foam

Benton is the K-beauty brand that ingredient-obsessed Reddit users discovered about five minutes before anyone else did. Founded in 2011, the brand built its identity around EWG-style transparency, minimal additives, and a deliberate refusal to chase the hype cycles that most Korean skincare brands ride. The Deep Green Tea Cleansing Foam is a neat test case for whether that philosophy actually changes the product, because 'green tea cleanser' is one of the most over-used marketing hooks in the category — most of them contain about as much green tea as a Lipton tea bag that has been briefly waved over the vat. Benton's version actually contains the plant. Ten percent of the water phase is green tea leaf water, not plain water, and three additional fractions — leaf, seed, and root extracts — sit further down the INCI. Whether that matters at the short contact window of a wash-off product is a fair question, but at least you are paying for what is on the label.

The cleansing base is a traditional Korean saponified-soap system: myristic, lauric, palmitic, and stearic acid combined with potassium hydroxide to generate a dense, creamy foam that removes sebum, sunscreen residue, and the tail end of an oil cleanser without any drama. The pH lands somewhere in the 9-10 range, which is alkaline enough that you should always follow with a low-pH hydrating toner to return skin to its acid mantle quickly — this is standard K-beauty routine practice and not a flaw of the product, but it is worth stating explicitly because people who cross over from amino-acid cleansers sometimes forget. Glycerin, panthenol, and a small centella asiatica soothing bench cushion the wash enough that it never crosses into 'squeaky-tight' territory for normal or combination skin, though dry and reactive users will feel the alkalinity more than they would with a cream cleanser.

Using it is about as uneventful as cleanser reviews get, which is actually the highest compliment you can give a face wash. A pearl-sized amount on damp hands whips into a dense, creamy foam — visually satisfying but not performative. Two-fingertip circles around the face for 30-45 seconds, rinse with lukewarm water, pat dry. Skin feels clean without that stripped-plaster sensation, the rosemary oil adds a faint herbal note that most users do not even register, and there is no fragrance-bomb scent to contend with. Makeup removal is competent for light coverage and excellent as a second cleanser — the potassium hydroxide soap dissolves waxes and residual oils more effectively than most amino-acid-based cleansers in the same price tier, which is the main practical reason to choose this over a 'gentler' alternative.

Limitations are real but modest. The alkaline pH is a disqualifier for rosacea, eczema, or actively compromised skin — those faces should stick to cream cleansers or micellar water. The rosemary leaf oil is a small but non-zero sensitizer for the subset of users who react to it. The tube packaging is functional but aesthetically plain, which matters mostly for buyers who care about shelf appeal. And the 10% green tea leaf water, impressive as it is for the category, is still delivering polyphenols into a wash-off product where most of the benefit rinses down the drain within a minute. The value proposition is where this cleanser settles into its 'quiet recommendation' slot: $17 for 120g of a well-built, fragrance-free, meaningfully active cleanser is genuinely fair, and it slots into nearly any routine that does not specifically require a low-pH formula. For oily, combination, or normal skin looking for a dependable second-cleanse step with actual green tea inside, this is one of the better options in its price tier.

Formula

The Science

The interesting science here is whether green tea polyphenols can deliver any measurable benefit in a wash-off format. The catechin family — especially epigallocatechin gallate, or EGCG — has solid literature as a topical antioxidant and mild anti-inflammatory when applied in leave-on formulations at concentrations above roughly 0.5-1%. A 2009 study in Experimental Dermatology by Hsu and colleagues demonstrated that EGCG applied topically reduced UV-induced inflammatory markers in human skin biopsies, and a 2013 Journal of the American Academy of Dermatology review covered green tea's emerging role in photoprotection and sebum modulation. Wash-off cleansers are a harder case: contact time is short, and most of the surfactant-carrying catechins rinse away before penetration can occur. Benton's formulation strategy — a 10% leaf water base rather than a trailing extract — is partially a bet that enough residual polyphenol content stays on the skin after rinsing to matter.

The fatty-acid soap science is simpler and better established. Myristic, lauric, palmitic, and stearic acid combined with potassium hydroxide generate the characteristic dense foam of Korean cleansing systems, with strong sebum- and residue-removal capacity. The tradeoff is a relatively high wash-off pH (typically 9-10) compared to the skin's natural 4.5-6.5 acid mantle, which is why the standard K-beauty advice is to follow with a low-pH hydrating toner. Centella asiatica's triterpenoid evidence base is well-documented for leave-on formulas, though as with the green tea, most of its benefit is limited by the short contact window in a cleanser. Panthenol has real but minor cleanser-era benefits in reducing post-wash tightness, with several controlled studies supporting its use in wash-off applications.

Dermatologist Perspective

Dermatologists often view Benton's Deep Green Tea Cleansing Foam as a reasonable middle-ground cleanser for patients with oily or combination skin who want something fragrance-free and relatively minimalist in the K-beauty space. It is not typically recommended for rosacea or eczema patients because of the alkaline wash-off pH and the rosemary oil component, and board-certified dermatologists tend to suggest low-pH amino-acid cleansers instead for those cases. For patients who double-cleanse and follow with a low-pH toner, this cleanser is considered compatible with most active routines, including those involving retinoids, azelaic acid, or benzoyl peroxide.

Guidance

Benton launched in 2011 as one of the first Korean indie brands to lean hard on EWG-style ingredient transparency. The Snail Bee line put them on the map, and the Deep Green Tea collection — introduced in 2018 — was the brand's answer to the sudden wave of premium green-tea K-beauty ranges like Innisfree's Green Tea Seed series, but positioned at the ingredient-geek end of the market rather than the mass-retail one.

About Benton Established Brand (5–20 years)

Benton launched in 2011 as a Korean indie brand focused on EWG-grade ingredient transparency and minimal-additive formulations, and built its reputation on the Snail Bee line before expanding into the Deep Green Tea and Fermentation collections. It has a durable following among ingredient-conscious K-beauty users.

Brand founded: 2011 · Product launched: 2018

Myth vs. Reality

Myth

Fatty-acid soap cleansers are always too harsh for the face.

Reality

pH and ingredient support matter more than the surfactant class. With glycerin, panthenol, and green tea extracts cushioning the wash and a low-pH toner afterward, this cleanser is perfectly usable for normal, combination, and oily skin — and it removes residue more effectively than most amino-acid cleansers.

FAQ

Common Praise

"cleans thoroughly without tightness"

"fragrance-free"

"affordable"

"nice dense foam"

Common Complaints

"slight rosemary oil scent"

"can be drying for sensitive skin"

"alkaline pH"

Appears In

best k beauty cleanser for oily skin best green tea cleanser best affordable korean cleanser best fragrance free foam cleanser

Related Conditions

oiliness acne dullness

Related Ingredients

green tea centella asiatica willow bark