Double Cleansing: How the Korean Two-Step Cleanse Works

Double cleansing is the first step of the Korean evening routine and the reason K-Beauty cleansers are so popular. The principle is simple: an oil-based cleanser dissolves what water-soluble cleansers cannot, and a second, water-based cleanser picks up the rest. Here you will learn when it makes sense, how to do it correctly and which products suit your skin.

Why two cleansing steps?

Sunscreen, waterproof make-up and sebum are oil-soluble. A foam cleanser alone removes them only incompletely or needs so many surfactants that the skin dries out. A cleansing oil dissolves oil-soluble residue gently, because like dissolves like, and emulsifies with water into a milk that can be rinsed off. The second, water-based cleanser removes the emulsion residue and water-soluble dirt. The result is thoroughly cleansed skin that does not feel tight.

When is double cleansing necessary and when not?

• In the evening with sunscreen or make-up: yes, both steps.
• In the evening without sunscreen and make-up: one step is enough; the oil for oily skin, the gentle cleanser for dry skin.
• In the morning: no. Lukewarm water or a gentle gel cleanser is enough.
• With badly irritated skin: only the oil or only a creamy cleanser until the barrier has recovered.

Step 1: using cleansing oil or balm correctly

1. Hands and face are dry. Spread one or two pumps of oil or a hazelnut-sized amount of balm in your hands.
2. Massage in gently in circular motions for one minute, including over eyes and lips if the product is suitable for that.
3. Wet your hands and keep massaging: the oil turns milky (emulsifying).
4. Rinse thoroughly with lukewarm water.

A good cleansing oil emulsifies completely and leaves no film. Balms are firmer and suit dry skin and travel; oils suit oily skin and quick use.

Step 2: water-based cleanser

1. Lather a small amount of gel or foam in wet hands.
2. Massage in gently for 30 to 60 seconds without scrubbing.
3. Rinse with lukewarm water and pat the face dry with a clean towel.

The cleanser should have a pH close to that of the skin (about 5 to 6) and contain mild surfactants, for example cocoyl glutamate, glucosides or betaines. Sulphates such as SLS are rare in Korean face cleansers. After rinsing, the skin may feel soft, not squeaky or tight.

Which cleansers for which skin type?

Oily and combination skin

A light, well-emulsifying oil, such as the Anua Heartleaf Pore Control Cleansing Oil, which also targets sebum in the pores, plus a gel cleanser with heartleaf, tea tree or low-dose BHA.

Dry skin

A cleansing balm or a rich oil such as the ma:nyo Pure Cleansing Oil and, as the second step, a creamy, barely foaming cleanser, for example the SKIN1004 Madagascar Centella Ampoule Foam.

Sensitive skin

Fragrance-free oil with centella or rice, followed by a gentle, pH-balanced cleanser. If irritated, skip the second step. The Biodance Soothing Barrier Cleansing Foam is formulated for this.

Normal skin

Almost anything works. The COSRX Low pH Good Morning Gel Cleanser is a good all-rounder for the second step and for the morning.

The most common double cleansing mistakes

• Applying the oil to wet skin: it emulsifies immediately and dissolves less.
• Water that is too hot: strains the barrier and dries the skin out.
• Massaging too long or scrubbing: one minute is enough.
• Foaming cleansers with strong surfactants as the second step: then the skin feels tight.
• Waiting a long time after cleansing: toner and skincare belong on still slightly damp skin.

Why the pH of the cleanser matters

The skin's surface is slightly acidic (pH about 4.5 to 5.5), which keeps micro-organisms in check and lets the enzymes of the skin barrier do their work. Alkaline cleansers such as classic soap (pH 9 to 10) shift this value for hours and dissolve lipids out of the barrier; the skin feels tight and reacts more sensitively. Korean cleansers are almost all set to pH 5 to 6 and use mild surfactants; many brands print the value on the packaging. For the second cleansing step this is the most important selection criterion, more important than fragrance or amount of foam.

Double cleansing on the go and after sport

When travelling, a cleansing balm replaces the oil because it cannot leak and, as a solid, is no problem in hand luggage. After sport, the water-based cleanser is usually enough if you have not worn sunscreen; with sunscreen the full two-step cleanse applies, ideally right after training, before sweat and sebum dry on. Cleansing wipes are a stopgap and do not replace rinsing.

Does cleansing oil clog pores?

No, as long as it is fully emulsified and rinsed off. An oil that does not emulsify (such as pure coconut oil) can leave residue; Korean cleansing oils contain emulsifiers such as PEG-20 Glyceryl Triisostearate or polysorbates that prevent this. If you are still unsure, choose an oil based on light esters and do the second cleansing step consistently.

Cleansing is step one of six in the evening routine. The guide to the order of the Korean skincare routine shows what comes next.