Why Is My Skin So Dry? Causes, Triggers and How to Fix It

Dry, tight, occasionally flaky skin is one of the most common complaints we hear, and one of the most fixable. If your face feels like it needs moisturiser an hour after you have applied it, or your cheeks sting when you smile in cold weather, there is almost always a reason behind it. Usually more than one. The good news is that most dryness responds well to a few sensible changes, and you rarely need a cabinet full of products to see a difference.

Below we walk through the usual causes, the everyday triggers that quietly make things worse, and a simple framework for putting moisture back into skin that has lost it.

What actually causes dry skin?

Dryness is not a single condition. It is the visible result of your skin barrier losing water faster than it can hold on to it. Several things influence how well that barrier works.

Genetics and skin type

Some people are simply born with fewer natural oils and a barrier that holds water less efficiently. If dry skin runs in your family, you may have a naturally lower level of the lipids and natural moisturising factors that keep skin supple. This is a type, not a fault, and it can be managed well once you understand it. Our guide to dry skin covers how to recognise the type and what suits it.

Ageing

As we get older, the skin produces less sebum and its barrier lipids gradually decline. Oestrogen changes around and after menopause tend to speed this up. Skin that was comfortable in your twenties can start to feel parched in your forties, and that shift is entirely normal.

Weather and central heating

Cold air holds little moisture, and the drop in humidity through a British winter pulls water from the skin. Central heating makes the indoor air drier still, so you are dehydrated coming and going. Wind and sudden temperature swings between a cold street and a warm office add to the strain. Most people notice their skin is at its driest between November and March.

Over-cleansing and harsh actives

This is the trigger we see most often, and the easiest to fix. Foaming cleansers that leave skin squeaky, twice-daily exfoliation, and layering several strong actives at once will strip the barrier faster than it can rebuild. High-strength retinoids, acids and vitamin C all have their place, but using them too frequently, or all together, often shows up as dryness, tightness and stinging rather than the glow people are chasing.

Hot water and long showers

Very hot water feels lovely on a cold morning, but it dissolves the surface oils that keep moisture locked in. Long, hot showers and baths leave skin drier than short, warm ones. The same applies to the face at the sink.

Hard water

Much of the UK has hard water, which is high in mineral content. It can be more difficult to rinse cleanser away fully, and some people find it leaves the skin feeling tight. It is rarely the whole story, but it can nudge already-dry skin further along.

Skin conditions and medical factors

Persistent, itchy or inflamed dryness is sometimes linked to conditions such as eczema (atopic dermatitis) or xerosis, and dryness can accompany thyroid changes or certain medications. We mention these for context, not diagnosis. If your skin is very dry, cracked, painful, or not settling despite gentle care, it is worth seeing a GP, pharmacist or dermatologist who can look at it properly.

Diet and hydration myths

Drinking water is good for you, but no amount of it will independently fix a compromised barrier if your routine is stripping the skin each morning. Staying reasonably hydrated and eating well supports skin health in general terms; what happens on the surface matters far more day to day. Treat topical care as the main lever and diet as background support.

How to fix dry skin: a simple framework

You do not need to overhaul everything at once. Work through these four steps and give your skin two to four weeks to respond before judging the results.

1. Cleanse gently

Swap any tight-after cleanser for a cream, milk or balm formula that leaves skin feeling comfortable rather than stripped. Cleanse once in the evening and simply rinse with lukewarm water in the morning if your skin is very dry. A hydrating option such as the AlumierMD HydraBoost cream cleanser is a good place to start, and you can browse other gentle cleansers to find a texture you like.

2. Layer a humectant, then a lipid moisturiser

Dry skin benefits from two things working together: ingredients that draw water in, and ingredients that stop it escaping. Apply a humectant such as hyaluronic acid or glycerin to slightly damp skin, then seal it with a richer moisturiser. Our hyaluronic acid range covers the first step, and a nourishing cream like the AlumierMD HydraDew Moisturiser handles the second.

3. Support the barrier

Ingredients that mirror the skin's own structure help it hold moisture for longer. Ceramides, fatty acids and cholesterol are the building blocks of a healthy barrier, and formulas built around them tend to calm tightness and flaking over time. Our ceramides range is worth exploring if your barrier feels persistently fragile.

4. Protect during the day

Daily SPF shields an already-stressed barrier from further damage, and many moisturising sunscreens double as a comfortable final layer. Look for one that feels hydrating rather than drying, and use it every morning, all year round.

What to stop doing

Sometimes taking things away helps more than adding them. Ease off daily exfoliation, pause strong actives while the barrier recovers, turn the shower temperature down, and resist the urge to try five new products at once. Give any change a fortnight before you decide whether it is working.

For a full step-by-step version of all of this, including morning and evening order, see our dry skin routine guide.

Frequently Asked Questions

Why is my skin so dry all of a sudden?

A sudden change is usually environmental or routine-related: colder weather, central heating, a new active product, or hotter showers. Look at what changed in the past few weeks and adjust that first. If nothing obvious has changed and the dryness is severe or persistent, speak to a pharmacist or GP.

Does drinking more water help dry skin?

Staying hydrated supports overall skin health, but drinking water alone will not repair a stripped barrier. What you put on the skin, and what you stop stripping off it, makes far more difference day to day.

What is the difference between dry and dehydrated skin?

Dry is a skin type with naturally low oil levels, and tends to be a long-term trait. Dehydrated is a temporary state where the skin is low in water, and it can affect any skin type, including oily. The care overlaps, but dehydration often improves quickly once you add humectants and ease off harsh products.

Can strong active ingredients cause dryness?

Yes. Retinoids, exfoliating acids and vitamin C are effective but can dry and irritate skin if used too often or layered together. Reduce the frequency, use them one at a time, and always follow with a barrier-supporting moisturiser.

When should I see a professional about dry skin?

If your skin is very dry, cracked, itchy, painful, or not improving with gentle care, it is worth a professional opinion. Persistent or inflamed dryness can be linked to conditions such as eczema and is best assessed by a GP, pharmacist or dermatologist.