Sunscreen is the single most useful skincare product you can buy. Ultraviolet (UV) rays cause sunburn and tanning, speed up skin ageing (wrinkles and dark spots) and raise the long-term risk of skin cancer. UV is strong in Pakistan for most of the year, so sun protection matters every day, not only in summer.

How to choose a sunscreen

• Broad spectrum: it should protect against both UVB (burning) and UVA (ageing) rays. Look for “broad spectrum” on the label.
• SPF 30 or higher: SPF 30 is a good everyday level. SPF 50 is useful if you spend long hours outdoors.
• Water resistant if you sweat a lot, swim or work outside.
• Texture: gel or fluid formulas usually suit oily skin; creams suit dry skin.
• Mineral or chemical: both work. Mineral sunscreens (zinc oxide / titanium dioxide) are often better tolerated by sensitive skin.

How much and how often

• Use enough. A common guide for the face and neck is the “two-finger rule”: a line of sunscreen along your index and middle fingers.
• Apply about 15 minutes before going out.
• Reapply every 2 hours, and right after swimming or heavy sweating.
• Use it on cloudy days too — UV passes through clouds.

Common mistakes

• Using too little product.
• Forgetting the ears, neck, hands and the back of the neck.
• Relying only on makeup that contains SPF.
• Using an expired sunscreen. Check the expiry date and the “period after opening” symbol.

Sunscreen is only one part of sun safety

Also seek shade between about 10 am and 4 pm, wear a hat and sunglasses, and cover up with light clothing when you can.

When to see a doctor

See a doctor or dermatologist if you notice a mole or spot that changes in size, shape or colour, bleeds, or does not heal.