How to tell if your skin is dehydrated

What should you look and feel for?

• A tight feeling or rough patches instead of your usual soft texture.
• A dull, scaly surface, visible flakes or peeling.
• Fine lines that look more noticeable alongside dryness.
• Itching, although dry skin does not always itch.

More severe moisture loss can cause cracks, bleeding, rawness, pain or stinging when water touches the skin. These are reasons to take the dryness seriously rather than treating it as a cosmetic texture problem.1

Is dehydrated skin different from dry skin?

The terms overlap: dry skin lacks moisture in its outer layer, called the stratum corneum, and excessively dry skin is noticeably dehydrated. The word dehydrated describes moisture loss, not a request to reorganize your entire bathroom. Skin dryness is not the same as body dehydration, which happens when you lose more fluid than you take in.134

Check what changed before the dryness started

Cold, windy weather, low humidity, air conditioning and direct heat can contribute to dryness. So can frequent bathing, soap, detergents and abrasive friction. Think about whether the change followed more washing or a different environment. Dryness can also accompany certain medicines, including oral retinoids and diuretics. A clinician assessing persistent dryness will consider your medicines, products, washing habits and medical history.4

What should you do next?

1. 1Use lukewarm rather than hot water, and choose a short shower instead of a prolonged hot bath.
2. 2Replace standard soap with a gentle soap substitute or fragrance free cleanser.
3. 3Apply moisturizer while your skin is still damp after washing. Moisturize in the morning and before bed, and reapply as needed.
4. 4Choose a cream or ointment for clearly dry areas. If you have oily areas, a lighter gel is an option; combination skin can need different care in different places.
5. 5Stop exfoliating dry, peeling areas and moisturize them instead. Avoid fragranced products that can irritate dry skin.

Gels, lotions, creams and ointments all count as moisturizers, which is why the skincare aisle can make one job look like four careers. Creams are thicker and more hydrating than lotions; ointments are the thickest option. Glycerin attracts moisture to the skin, while emollients help soften it.25

What improvement should you expect?

Moisturizers soften dry skin and help prevent cracking. Dryness can improve once contributing factors are controlled, though a tendency toward dry skin can persist. If regular moisturizing does not help, or the dryness keeps returning, see a dermatologist rather than continuing to change products.24

Could your body be dehydrated too?

Check for thirst, a dry mouth, dark yellow urine, peeing less often, headache or dizziness. Body dehydration is more likely after heavy sweating, vomiting or diarrhoea. Mild dehydration can usually be treated by drinking fluids. If you feel sick, start with small sips; a pharmacist can advise on oral rehydration solutions when vomiting or diarrhoea causes fluid loss.36

When should you get medical help?

See a dermatologist for worsening dryness, painful cracks, bleeding, persistent stinging or severe irritation. Yellow crusts, leaking pus, swelling or discoloration can signal a skin infection and need medical assessment.15

For suspected body dehydration, seek urgent care if dizziness on standing does not go away, you are unusually tired, or you are peeing less than normal. Confusion, difficulty breathing or difficulty waking require emergency help.3