Despite this summer’s continued heatwaves, a recent survey indicates that a majority of adults in the United Kingdom have yet to purchase sunscreen this year. The poll, involving 30,000 respondents across England, Scotland, and Wales, revealed that more than 60% of adults had not bought sunscreen in 2024. Moreover, only 56% reported purchasing any sunscreen within the past two years.
Dr Ross Perry, a skin cancer specialist and medical director at Cosmedics, outlined key indicators that suggest it may be time to replace old sunscreen products. He emphasized the importance of checking expiry dates, explaining that sunscreens degrade over time and should be discarded once expired. Changes in texture—such as becoming unusually thick, clumpy, or watery and separated—are also signs that a product has deteriorated and should be replaced.
Environmental factors can affect sunscreen quality as well. According to Dr Perry, exposure to heat, direct sunlight, or damp conditions can alter the product’s effectiveness. He also noted that sunscreens exposed to air for extended periods, such as after opening, tend to degrade and lose potency. Additional warning signs include the presence of mold around the container’s lid or opening, which warrants immediate disposal.
Dr Perry further cautioned that using old or improperly stored sunscreen might lead to skin irritation. He highlighted that recurring sunburns despite proper application could indicate either insufficient application, inadequate reapplication, or that the sunscreen no longer provides effective protection.
Regarding how frequently sunscreen should be replaced, Dr Perry recommended following a yearly replacement cycle. However, if an unopened bottle or tube remains within its expiry date, it can generally be used safely. When selecting a new sunscreen, Dr Perry advised opting for broad-spectrum products with SPF 30 or 50, applying them generously, and reapplying regularly—especially after swimming, sweating, or drying off with a towel.
He also noted that skin type plays a role in sunscreen choice: individuals with fair skin are advised to use SPF 50 for optimal protection, while those with olive skin may find SPF 30 sufficient.
The survey results and expert guidance underscore the need for consumers to be vigilant about sunscreen use and replacement, especially as high temperatures and increased sun exposure continue through the season.