Dullness

Dullness is that flat, slightly tired look when skin seems to have lost its glow. Most of the time it comes down to the surface. As skin naturally sheds, dead cells can pile up on the outer layer, and a rough, uneven surface scatters light instead of bouncing it back cleanly. The result reads as "dull" even when nothing is actually wrong underneath.

It helps to think of glow as light behaving well on smooth, hydrated skin, rather than as a thing you have to buy.

Why it happens

A buildup of dead surface cells is the usual culprit. Dehydration plays a part too, because skin that's low on water looks duller and less plump. Day-to-day things can nudge it along: not much sleep, dry indoor air, missing your moisturiser, or sun exposure over time. None of these are dramatic, and that's the point, because the fix is usually just as low-key.

What tends to help

Two simple aims cover most of it: hydrate the surface, and gently help skin turn over.

For hydration, a humectant such as glycerin or hyaluronic acid pulls water into the upper layers, followed by a moisturiser to hold it there. For turnover, a mild exfoliating acid a couple of times a week can help lift the dead cells that flatten the light, though there's no need to overdo it. Daily sunscreen matters here too, since sun exposure adds to dullness over time. If you're not sure whether the cause is buildup, dryness, or something else, the Face Scanner in the Skin Bliss app can help you read what your skin is actually showing.

Go gently. Over-scrubbing or stacking too many strong actives can leave skin looking worse, not brighter.

When to see a professional

If skin stays dull, grey, or unusually tired-looking even with good basics, or it comes alongside other changes you can't explain, it's worth mentioning to a doctor or dermatologist, since persistent dullness can occasionally point to something beyond skincare.