Cosrx Hydrium Triple Cleanser

Hydrium is COSRX's hydration-focused range. Where the brand's snail and acid lines target repair and pore care, Hydrium is about water and barrier comfort. This cleanser is the line's entry to a routine, designed so the very first step does not undo the hydration the rest of your products are working to build. That framing matters: it is a cleanser chosen for what it leaves behind, not just what it lifts off.

The triple in the name refers to using more than one form of hyaluronic acid, typically at different molecular weights, so they can support hydration at different levels of the skin's surface. Hyaluronic acid is a humectant, meaning it attracts and holds water. In a cleanser its job is to offset the moisture loss that washing normally causes, so skin feels supple rather than stripped when you are done. It is a small but meaningful difference you notice most right after rinsing.

This is a gentle, moisturizing wash rather than a deep-clean foaming type. It cleans away the day's grime, sweat, and light sunscreen while keeping the skin barrier comfortable. People who switch to it from a tight, squeaky cleanser usually notice their skin feels cushioned afterward instead of stripped. It is not designed to break down heavy makeup on its own, so on full-makeup days it works best as the second step after an oil cleanser.

We list this cleanser in a 50ml and a 150ml. The 50ml is the trial and travel size: a low-commitment way to see whether a hydrating cleanser suits your skin, and small enough to pack. The 150ml is the everyday value size for anyone who has settled on it as their daily wash. Starting with the 50ml and sizing up once it proves itself is the practical order.

Apply a small amount to damp skin, massage gently for fifteen to twenty seconds, and rinse with lukewarm water. It suits both morning and evening use. In the morning it is often enough on its own; at night, if you wore makeup or heavy sunscreen, use an oil cleanser first and follow with this as the second cleanse. Always follow with your hydrating and moisturizing steps to build on the comfort it leaves.

A hydrating cleanser is the most natural fit for dry, dehydrated, and sensitive skin that finds standard cleansers stripping. Combination skin can use it daily, and even oily skin that has been over-cleansed often benefits from a gentler, moisture-keeping wash. If your skin runs very oily and you prefer a squeaky-clean finish, this may feel too mild, but for most people seeking comfort it is a safe choice.

This cleanser is the opening step of a hydration-focused routine. Follow it with a hydrating toner or essence, then a moisturizer, and the hyaluronic theme carries through from the first step. Because it does not strip, it sets up the rest of your products to work on a comfortable, well-hydrated base rather than one you first have to repair after cleansing.

COSRX is a Korean brand, and its popular cleansers are copied on open marketplaces. The point of this product is its hydrating, hyaluronic formula, which a counterfeit cannot reliably match. The Hydrium cleanser on this page is genuine COSRX, sourced and packaged as the brand ships it.