Skincare in Extreme Heat: Multan & Faisalabad, Pakistan

Summers in Multan, Faisalabad and other hot inland cities bring intense sun and very high temperatures, often with dry air in addition to humid spells. The result can be sunburn, dehydration, heat rash, oily and tight skin at the same time and dark marks that deepen through the season. This guide explains what extreme heat does to skin, a practical routine, how to protect from sun and sweat, how to store products in heat and the warning signs of heat illness. Our focus is Pakistan, where summer temperatures in Multan and Faisalabad are among the highest in the country.

Key takeaways

Extreme heat and strong UV raise risks of sunburn, dehydration and pigmentation
Sunscreen, shade, hats and reapplication matter more than any serum
Keep the routine light and gentle, and cleanse after sweating
Heat illness is a medical emergency, so know the warning signs

What does extreme heat do to skin?

High temperatures increase sweating, blood flow to the skin and water loss, while strong sunlight adds ultraviolet exposure. Studies of seasonal variation in skin parameters show that skin hydration and oil production vary with the season, and a review of ambient humidity and the skin explains how air humidity influences skin water balance. In very hot, dry air, sweat evaporates quickly, so skin can feel oily and tight together, and the barrier may be stressed. Heat can also aggravate melasma, flushing and rosacea.

Many people also suffer from dust and wind in hot, dry cities, which adds to irritation.

How do you protect from sun in extreme heat?

Use broad-spectrum sunscreen every morning on the face, ears, neck, backs of the hands and any exposed arms. Apply enough, and reapply every two hours outdoors and after sweating. A study of when sunscreen should be reapplied supports regular reapplication, and a study of facial sunscreen coverage over an eight-hour workday describes how coverage changes with time. A study on enhancing the sweat resistance of sunscreens shows that sweat affects sunscreen performance, which is another reason to reapply. Wear a wide-brimmed hat, use shade and avoid peak sun hours. Sunglasses protect the eyes and the delicate skin around them.

A cool day is not a sign of low UV, but in extreme heat the temptation to skip layers is strong. Do not skip sunscreen.

Protection	Why	Tip
Broad-spectrum sunscreen	Blocks UVA and UVB	Apply a generous amount
Reapply every two hours	Sweat and rubbing remove it	Carry a stick or compact
Wide-brimmed hat	Shades face and neck	Light colours
Sunglasses	Protect eyes and eyelids	UV-blocking
Shade and timing	Reduces exposure	Avoid midday sun
Light, loose clothing	Protects arms	Cotton or linen

What should a heat-friendly routine look like?

Morning: a gentle gel cleanser or water rinse, a light hydrating serum, a gel or lotion moisturizer and sunscreen. Evening: remove sunscreen and sweat with a gentle cleanser, apply any scheduled active if the skin is comfortable and then a light moisturizer. Keep exfoliants to once a week or less, since sunburnt, irritated skin reacts badly. Use oil-free products if your skin is oily, and a slightly richer night cream if you have dry skin. See skincare routine for oily skin in humid weather and winter to summer skincare.

Avoid trying a new strong product at the start of a heat wave.

Gentle gel cleanser
Light hydrating serum
Gel or lotion moisturizer
Sunscreen reapplied outdoors
Active products at lower frequency
Rest the skin if burnt or irritated

How do you manage sweat, heat rash and breakouts?

Wear loose cotton clothing, shower after sweating with lukewarm water, dry skin folds well and avoid heavy creams on areas that sweat. See prickly heat on the face in humid weather and sweat and body breakouts. Change out of damp clothes quickly, and wash hats and pillowcases regularly. Keep hair products off the forehead.

If a rash persists, spreads, blisters or you feel unwell, see a doctor.

Problem	Cause	What helps
Heat rash	Blocked sweat ducts	Cool, loose cotton, keep dry
Back and chest breakouts	Sweat and friction	Shower after sweating
Oily T-zone	Heat	Gel moisturizer, gentle cleansing
Tight, dehydrated cheeks	Dry air and sweat loss	Hydrating serum
Sunburn	Strong UV	Sunscreen, shade
Dark marks	Sun and irritation	Sunscreen, patience

How do you store skincare in extreme heat?

Heat degrades vitamin C, retinol, sunscreens and many natural formulas, and can change textures. Keep products in the coolest, darkest cupboard, not in the bathroom, car or windowsill. Use an insulated pouch when travelling. Check colour, smell and texture before use. See storing skincare in heat and load-shedding and serum expiry and oxidation.

The Hydration Moisturizer is a light daily moisturizer; check the product page for the ingredient list, patch test and store it cool.

What about hydration and heat illness?

Drink enough fluids through the day, particularly when working outdoors, and rest in the shade. Heat illness ranges from heat cramps and exhaustion to heat stroke, which is life-threatening. Warning signs include dizziness, severe headache, nausea, confusion, very hot dry skin or sweating that stops, fainting and a rapid pulse. These need urgent medical care and cooling. Children, older adults, outdoor workers and people with chronic illness are most at risk.

What about dark marks and melasma in heat?

Heat and sun can darken pigmentation and worsen melasma. Strict sunscreen, shade and gentle routines are the foundation. If dark patches are symmetrical on the cheeks, forehead or upper lip, ask a dermatologist. See retinol and tranexamic acid in one routine for how brightening ingredients are staged.

When should you see a doctor?

See a doctor for blistering sunburn, a spreading rash, inflamed acne or dark patches that spread. Seek urgent care for heat illness symptoms such as confusion, fainting, vomiting, very hot dry skin or a rapid heartbeat.

How should outdoor workers and commuters adapt?

People who work outdoors, ride motorbikes or commute long distances are exposed to the most sun and dust. Wear a long-sleeved, light-coloured cotton shirt, a wide hat or a scarf that shades the neck, sunglasses and a helmet with a clean, breathable liner. Apply sunscreen before leaving and carry a small stick or compact to reapply at breaks. Wash your face after dusty rides, carry water and take rest breaks in the shade. If you wear a mask or helmet for hours, clean the parts that touch your skin, since friction and sweat can cause breakouts.

Keep a spare cotton cloth to wipe sweat gently rather than rubbing the skin with dirty hands.

Situation	Risk	Practical step
Motorbike commute	Sun, dust, helmet friction	Sunscreen, clean helmet liner
Outdoor work	Hours of UV	Hat, long sleeves, reapply
Long drives	Sun through glass	Sunscreen on face and arms
Dusty roads	Irritation	Wash face after, avoid rubbing
Hot workplace	Heat rash	Cotton clothing, cool breaks

What about children, older adults and sensitive skin?

Children and older adults have more fragile skin and less ability to cope with heat. Keep them indoors at peak hours, dress them in light cotton, use sunscreen suitable for their age and make sure they drink enough. People with eczema, rosacea or very sensitive skin may flare in heat and should use fragrance-free, gentle products and cooling measures, avoiding hot showers and steam. If a child has a rash with fever or seems unwell, see a doctor promptly.

Frequently asked questions

How do I protect my skin in extreme heat?

Use broad-spectrum sunscreen, reapply every two hours, wear a hat, seek shade and keep the routine light.

Should I use a heavy moisturizer in heat?

No. Use a gel or lotion.

Why does my skin feel oily and tight?

Heat increases oil and sweat while dry air can dehydrate. Use a light hydrating serum and moisturizer.

How do I prevent heat rash?

Wear loose cotton, cool down, shower after sweating and keep skin dry.

Where should I store skincare in summer?

In a cool, dark cupboard, not in cars or bathrooms.

Can heat worsen melasma?

Heat and sun can worsen it. See a dermatologist.

What are signs of heat illness?

Dizziness, confusion, nausea, very hot dry skin or fainting. Seek urgent care.

When should I see a dermatologist?

For blistering sunburn, spreading rash or inflamed acne.

Sources

Nam GW et al.. The seasonal variation in skin hydration, sebum, scaliness, brightness and elasticity in Korean females. Skin Res Technol. 2015. PubMed 24528115
Goad N et al.. Ambient humidity and the skin: the impact of air humidity in healthy and diseased states. J Eur Acad Dermatol Venereol. 2016. PubMed 27306376
Diffey BL. When should sunscreen be reapplied?. J Am Acad Dermatol. 2001. PubMed 11712033
Keshavarzi F et al.. Enhancing the sweat resistance of sunscreens. Skin Res Technol. 2022. PubMed 34752663

A gentle reminder

Skincare helps the look and feel of your skin; it does not treat medical conditions. Patch test any new product behind the ear or on the inner arm first, and introduce one new active at a time. If you are pregnant or breastfeeding, or you have a skin condition such as eczema, ask your doctor before adding active ingredients. See our FAQ for more, or build your own routine.