A skin glossary, without the marketing

The outermost layer of skin, made of flattened cells held together by lipids. Its job is to keep water in and irritants out. When it is doing well, skin feels comfortable and stays comfortable; when it is not, everything stings a little and nothing seems to absorb properly.

Water evaporating outward through the skin's surface. It happens constantly, and it speeds up in air conditioning and on planes. Most of what a routine does about it is simple: put water on, then put something over the water so it leaves more slowly.

Dry skin is short on oil and tends to stay that way. Dehydrated skin is short on water and can happen to anyone, including oily skin, and changes week to week. Oily-but-dehydrated is one of the most common combinations we see in Kuala Lumpur.

Two cleanses in sequence. The first is oil-based and dissolves make-up, sunscreen and the day's oil. The second is water-based and cleans the skin itself. It is the opening step of almost every session in the studio.

A thin, watery layer applied to skin that is still damp, usually pressed in with the palms rather than rubbed. It exists to carry water into the upper layers before anything heavier goes on top.

An ampoule is a more concentrated serum, usually sold in a smaller bottle and used as a short course rather than forever. A serum is the everyday version. If a routine already contains a serum, an ampoule replaces it for a few weeks rather than joining it.

A final layer whose job is to sit on top and slow water leaving. Balms and heavier creams are occlusive. In a humid climate most people need one only at night, and only on the areas that feel tight.

A finish, not a skin type. Even tone and a very smooth surface reflect light in one direction instead of scattering it, which reads as clarity. It is built through hydration and gentle surface work, and it is temporary by nature — which is why it is a ritual rather than a result.

Chok-chok describes skin that feels plump and slightly damp to the touch. Mul-gwang, literally water-shine, describes the wet-looking finish achieved by layering thin fluids instead of one heavy cream. Both are descriptions of texture, not promises.

An-fu marks a formula designed to feel calming and settling on skin that is easily upset. Bu-shui marks a water-replenishing one, closest in spirit to a Western hydrating essence. Both are category words, and both should still be judged on the ingredient list.

Fruit-derived enzymes that loosen the bonds between surface cells so they lift away, with no scrubbing and no acid. It is the gentlest surface step we offer and the usual starting point for skin that reacts easily.

Light, slow, directional massage that follows the natural drainage lines of the face and neck. It feels like almost nothing while it happens and is the reason faces often look less puffy at the end of a session.

A small amount of a formula placed along the jawline and left for a few minutes before it goes anywhere else. Standard for anyone who has told us their skin reacts easily, and never skipped for the sake of time.

Purging is short, appears where you usually congest, and settles within a week or two. A genuine break-out brings new spots in places you do not normally get them, and lasts longer. If you are unsure which you are looking at, send us a photo.

Sealing a night routine under a thick occlusive layer. Useful on a tight, wind-burnt or over-exfoliated night; unnecessary most of the time in this climate, and best kept away from areas that congest.

Rotating a week so that active nights and recovery nights alternate rather than stacking. It is the simplest way to keep a routine sustainable, and it is what most aftercare notes describe without using the phrase.