The sun’s ultraviolet (UV) radiation is the main cause of skin cancer – and it’s important to remember that sunburn is caused by UV radiation, which is not related to temperature.
Research shows that sunscreen is effective in preventing skin cancer, including the most serious type, melanoma. You should make sunscreen application a regular part of your daily routine.
Sun protection is recommended whenever the UV level reaches 3 or above.
- It should be applied 20 minutes before going outdoors.
- It needs to be reapplied every two hours, regardless of what you are doing.
- Sunscreen also needs to be reapplied after swimming, exercise or towel drying (even if it’s under two hours since your last application)
- Always check the expiry date on the container. After this date it won’t give you proper protection against UV radiation.
- Sunscreen needs to be applied liberally to achieve the SPF (Sun Protection Factor) claimed on the label. Not applying enough substantially reduces its effectiveness.
A full body application for an adult should be at least 35mL or seven teaspoons.
At least:
- One teaspoon per limb
- One for the front of the body
- One for the back
- One for the head
- Sunscreen alone won’t protect you – it should be used with other sun protection measures:
- Limit time outdoors during peak UV times.
- Use shade whenever you can.
- Wear protective clothing, hats, and sunglasses.
Are you staying sun smart all year round?
- Sunscreen should be kept out of direct sunlight or other heat sources – it should be stored below 30°C to remain effective. For example, avoid leaving it in the car in the heat or on a windowsill. The ingredients will begin to separate, leaving a gritty, lumpy, or watery consistency affecting how it is applied to skin, as well as the effectiveness of its UV protection.
- Having said that, don’t store sunscreen in the fridge – this may cause it to thicken and make it difficult to apply properly.
- Even if it has been stored correctly, if you haven't used your sunscreen for a while, it's important to check the consistency. It should be smooth and easy to apply. If it looks or feels different to when you first bought it, it may not give full protection from the sun.
Source:
SunSmart