MoneySavingExpert (MSE), the consumer website founded by Martin Lewis, has issued a simple tip for anyone buying sunscreen: turn the bottle around and check the 'period after opening' (PAO) number. This number, usually 12 or 24 months, indicates how long the sunscreen remains effective after first use.
How the Tip Saves Money
According to MSE, checking the PAO number can help consumers determine if leftover sunscreen from previous years is still effective, potentially saving them money. In an Instagram post, MSE explained: "If you turn your sunscreen around, on the back you should find the 'period after opening' (PAO) number. This number tells you how many months it should still protect you after you first use it, usually 12 or 24 months."
The experts added that if sunscreen is past its prime, it can still be used as a body lotion. They also suggested writing the opening date on the bottle to track its expiry. A commenter recommended noting the original expiry date as well.
Heatwave Prompts Sun Safety Concerns
The tip comes as the UK experiences a red Extreme Heat warning, with temperatures forecast to reach 37°C in southern England. Many families are stocking up on sunscreen, making MSE's advice timely. The Met Office has warned of extreme heat on Wednesday and Thursday.
NHS Sun Safety Guidelines
The NHS emphasises that sunscreen is vital for preventing sunburn, which increases the risk of skin cancer. It notes that sunburn can occur in the UK even on cloudy days and that there is no safe way to tan. The health authority recommends seeking shade between 11am and 3pm from March to October.
"Sunburn increases your risk of skin cancer. Sunburn does not just happen on holiday. You can burn in the UK, even when it's cloudy. There's no safe or healthy way to get a tan. A tan does not protect your skin from the sun's harmful effects," the NHS states.
The NHS advises using at least factor 30 sunscreen, reapplying frequently, and covering up with clothing and sunglasses. It also recommends looking for at least four-star UVA protection, indicated by the letters UVA in a circle.
