Once a routine grows beyond cleanser and moisturiser, the question of order comes up quickly. Does the serum go before the oil? Where does sunscreen fit? Does any of it matter?
Order does matter, though less dramatically than some brands suggest. The aim is simple: let each product reach the skin in a way that allows it to do its job, and avoid diluting or blocking what you paid for.
The basic rule: thin to thick
Most routines follow texture, from the most watery to the most oily or occlusive. Water-based products spread easily on bare skin; oils and heavy creams form a film that makes it harder for anything applied afterwards to spread evenly.
| Step | Morning | Evening |
|---|---|---|
| 1 | Gentle cleanser or just water | Cleanser (double cleanse if wearing sunscreen or make-up) |
| 2 | Water-based serum, such as vitamin C | Treatment serum or prescribed product |
| 3 | Moisturiser | Moisturiser |
| 4 | Sunscreen, last | Facial oil, optional, last |
Where an oil fits
An oil normally goes near the end, after water-based layers, because it helps seal them in. In the morning many people skip the oil or blend a drop into moisturiser, so that sunscreen sits on a surface that is not slippery. Sunscreen needs an even film to protect as labelled, and a thick layer of oil underneath can make it pill or slide.
Prescription products come first
If a doctor has prescribed a cream, for example for acne, rosacea or eczema, follow their instructions about timing. Many are applied to clean, dry skin before anything else. Do not dilute a prescription with oils unless you have been told it is fine.
Do you need to wait between layers?
For most cosmetic products a minute or so is enough for each layer to settle. There are a few exceptions: some people find that low-pH vitamin C serums sting less if the skin is completely dry first, and many find retinoids less irritating applied to dry skin. Beyond that, long waiting periods are more ritual than science.
Keep it short
Every extra product is another chance of irritation. If your skin is red, tight or stinging, simplify first: cleanser, a plain moisturiser and sunscreen. Add one new product at a time and give it a couple of weeks before adding another, so you can tell what is working and what is not.
The same thinking applies when you travel. A pared-down kit of three or four reliable products, packed in containers that pass airport rules, travels better than a full shelf, as we explain in our carry-on kit for a casino weekend.
