How to know your skin type

Wash your face with a gentle cleanser, apply nothing at all, and wait four hours. If your whole face is shiny, you are oily. If it feels tight and looks flaky, you are dry. If your forehead and nose shine while your cheeks do not, you are combination. If it simply feels comfortable, you are normal. That is the test.

It works because it removes every variable. Every product you own is trying to change how your skin behaves, so judging your type while wearing them tells you about the products rather than the skin. Four hours is long enough for oil production to become visible and short enough that you have not gone a full day bare-faced. Do it on a normal day, not after a workout or a long flight.

What each result actually means

• Oily — visible shine across forehead, nose, cheeks and chin. Usually larger visible pores, more prone to congestion. The mistake to avoid is stripping, which reliably makes it worse. Start with the oily skin roundup.
• Dry — tightness, dullness, sometimes visible flaking. Dry skin lacks oil, which is a structural thing your skin either produces or does not. The dry skin roundup is the starting point.
• Combination — an oily T-zone with normal or dry cheeks. The most common type and the worst served by product marketing. See the combination skin roundup.
• Normal — comfortable, no shine, no tightness. It exists, it is not a humblebrag, and the correct routine is a short one.
• Sensitive — not a fifth category so much as a modifier. Skin that stings, flushes or reacts can be oily, dry or combination at the same time. Treat sensitivity as an additional constraint on ingredient choice, not as your type.

The mistake almost everyone makes: dry versus dehydrated

This is the single most useful distinction in skincare and almost nothing on a shelf explains it. Dry skin lacks oil. It is a type — largely genetic, fairly stable, and it shows up as flaking and roughness. Dehydrated skin lacks water. It is a condition — temporary, caused by over-washing, harsh actives, weather or a compromised barrier — and it shows up as tightness, dullness and fine lines that appear overnight.

Oily skin can be dehydrated. In fact it very often is, because oily skin gets treated aggressively. The result feels tight and looks shiny at the same time, which is confusing enough that people buy a rich cream, congest their pores, and conclude their skin is impossible. It is not impossible; it is dehydrated, and the fix is to wash less aggressively for two weeks and add a humectant, not to add oil.

The tell: if your skin looked and behaved differently three months ago, that is dehydration or barrier damage, not a change of type. Our damaged skin barrier guide has the recovery protocol, and it costs nothing to run.

What actually changes your skin type

Genuinely: age (oil production declines steadily from your twenties), climate and season, hormones including pregnancy and menopause, and some medications. Skin type is not fixed for life, but it does not change month to month either. If yours seems to, the variable is almost always something you are doing to it.

Not on that list: your cleanser, in the way people think. A harsh cleanser does not turn oily skin into dry skin — it turns oily skin into dehydrated, irritated oily skin that behaves badly. The type underneath is unchanged and returns once you stop.

Retest when things change

Run the bare-face test again after a seasonal change, after a house move to a different climate, or if your routine has stopped working. Ten minutes of paying attention beats any online quiz, and it costs nothing. If your skin is currently irritated, wait until it has settled — an angry face tests as sensitive regardless of what it actually is.

What to do with the answer

Buy a cleanser and a moisturizer that suit the type, and a sunscreen that suits everyone. That is the whole application. Skin type decides texture — gel or cream, lotion or balm — far more than it decides ingredients: a ceramide is a good idea for every type, and so is daily SPF. If you want the shortest defensible routine to build on your result, our best skincare routine guide is three products long, and the routine order guide puts them in sequence.