Dehydrated skin: signs, causes and what helps

What does dehydrated skin mean?

Dehydration describes moisture loss; dry skin can involve loss of both water and natural oils. The two overlap rather than being neatly separate problems. Skin needs moisture in the stratum corneum, its outermost layer, to stay comfortable and flexible. When that layer's protective barrier is impaired, its ability to hold water decreases and cracks can develop. The practical aim is to replace moisture and reduce further water loss, not just make the surface temporarily feel wet.34

What does dehydrated skin look and feel like?

• Dryness, itch and fine lines that look more noticeable can accompany moisture loss.
• Flaking and a rough texture develop when skin loses enough moisture.
• Tightness, scaling and changes from your usual skin color can occur with dry skin.
• Severe dryness can cause cracks, bleeding and raw, painful areas.

Dry skin can affect the face, hands, legs or other areas, either in small patches or across a larger area. Moisture loss can make fine lines more visible, so that change alone does not tell you that your skin has suddenly aged. Severe dryness is more than a texture problem: cracked or raw skin can sting or burn when water touches it. Nearly constant itch that interrupts work or sleep deserves medical attention rather than another cosmetic purchase.15

Why is your skin losing moisture?

Common contributors include cold or dry weather, indoor heating or cooling, frequent or prolonged bathing, and some soaps and detergents. Repeatedly wet hands and work involving chemicals can also contribute. Rough clothing and abrasive friction can aggravate dryness. Age matters too: skin becomes thinner and produces less natural oil as people get older. Dry skin can affect anyone, but dry climates and frequent handwashing increase the risk.345

Persistent dryness can also accompany eczema, psoriasis, an underactive thyroid or other health conditions. Certain medicines, including treatments applied to the skin and medicines taken by mouth, can contribute. If dryness began after a medicine change, include that timing when discussing symptoms with your clinician. A medical assessment considers your health history, medicines, bathing habits and environment; tests are sometimes needed when an underlying problem is suspected.34

How should you care for dehydrated skin?

1. 1Wash gently. Use warm rather than hot water, keep baths or showers to five to ten minutes, and avoid unnecessary washing. Choose a gentle cleanser without perfume or dyes.
2. 2Pat dry with a clean towel. Do not rub the skin dry, and leave it slightly damp.
3. 3Apply moisturizer immediately. Smooth an emollient gently over the skin in the direction of hair growth rather than rubbing vigorously.
4. 4Repeat regularly. Moisturize in the morning, before bed, after washing and whenever skin feels dry or tight.
5. 5Protect exposed skin during the day. Use broad spectrum, water resistant sunscreen with SPF 30 or higher, plus shade and protective clothing.

An emollient is a moisturizing treatment that soothes skin and forms a protective film to trap moisture. Some can also replace ordinary soap for washing; follow the product's directions. A cleanser does not need to foam to clean skin, despite foam having an excellent public relations department.6

Which moisturizer should you choose?

Moisturizer is the main treatment, even when the shelf would prefer a more complicated answer. Choose a product designed for the affected area: your face and body do not necessarily need the same formula. For dry, sensitive skin, look for fragrance free products. "Unscented" products can contain ingredients that hide odors and irritate sensitive skin.25

Glycerin attracts moisture to skin, while ingredients such as petrolatum and mineral oil help retain it. Humectants, ingredients that help hold moisture, include urea and propylene glycol. Creams or lotions containing urea and lactic acid are also used for dry skin. Choose by the severity of dryness, comfort, cost and availability, rather than treating the moisturizer aisle as an entrance exam.345

What should you change or stop?

Stop using fragranced products and cosmetic retinoids while addressing dry skin. Ask your dermatologist before adding an anti itch cream, because some can worsen irritation. Reduce environmental triggers too: use gloves for wet work and cold weather, and choose soft clothing rather than rough fabrics. A bedroom humidifier can help with dry indoor air; clean it regularly to prevent mold.2

What improvement should you expect?

Moisturizers soften rough skin, help prevent cracking and support the protective barrier. Regular emollient use also reduces water loss and itch. Dryness can improve once contributing factors are controlled, although a tendency to dry skin can persist for life. Continued care matters when the trigger, such as frequent handwashing or a dry environment, remains. If dryness does not go away or repeatedly returns, seek a dermatologist's assessment rather than continually replacing products.45

When should you get medical help?

Get medical advice for deep or bleeding cracks, significant pain, or itch that disrupts sleep. Yellow crusts, leaking pus or other fluid, swelling and discoloration can signal infection. Tell a clinician if moisturizer causes burning, stinging or irritation. Emollients can also cause inflamed hair follicles or facial rashes that aggravate acne; speak with a pharmacist or clinician if these develop.126

If you use a steroid cream or another treatment for a skin condition, leave 20 to 30 minutes between that treatment and your emollient. Ask your doctor which goes first. The gap helps avoid diluting the medicine or spreading it to areas that do not need treatment.6

Keep emollient contaminated clothing and bedding away from flames and cigarettes, including with paraffin free products. Washing does not completely remove the buildup. Use a clean spoon or spatula for moisturizer in a tub, and watch for slippery surfaces when using emollients in the bath or shower.6