With the arrival of summer, questions about sunscreen use are multiplying on social media and in everyday conversations. One of the most widespread myths is that sunscreen prevents the skin from breathing or regenerating at night , an idea that has no scientific basis. Several dermocosmetics experts have stepped forward to clarify what is true and what is not, and they remind us that sun protection is a habit that should be maintained 365 days a year, rain or shine.
The cosmetics industry has been emphasizing for years that sunscreen is not just a seasonal product. Today, it's considered a fundamental step in any complete skincare routine , both for its ability to prevent sunburn and for its role in combating premature aging, dark spots, and loss of firmness. But for it to be truly effective, it's not enough to apply it once: it must be applied correctly and reapplied throughout the day.
The most common myths about sunscreen
One of the most common mistakes is thinking that a sun protection factor (SPF) of 50 offers unlimited protection. Nothing could be further from the truth: SPF 50 indicates high protection, but only if applied in sufficient quantity and reapplied as needed . According to cosmetologist Raquel González, when exposed to direct sunlight—whether at the beach, pool, mountains, or while playing outdoor sports—it's advisable to reapply every two hours and always after swimming or sweating. Expert Lourdes Mourelle agrees: sunscreen filters are depleted as they transform ultraviolet radiation, so it's necessary to reapply them to maintain protection.
Another widespread myth is that cloudy days don't require sun protection. Ultraviolet radiation penetrates clouds and continues to affect the skin even if it doesn't feel hot , making the risk of sun damage just as real. In fact, experts warn that on these days the feeling of security is false, and people tend to neglect sun protection.
It's also believed that having tanned skin is a shield against the sun. A tan is a natural defense, but it doesn't prevent cumulative damage . Radiation still contributes to loss of firmness, the appearance of blemishes, dehydration, and premature aging, so don't be complacent.
The importance of nighttime cleaning
One of the biggest concerns for users is whether sunscreen accumulated during the day can interfere with nighttime skin regeneration. The answer is clear: the problem isn't the sunscreen itself, but rather not removing it properly before bed . During the day, traces of sunscreen, sweat, makeup, and pollution accumulate on the skin, and this mixture can become occlusive if not thoroughly removed.
That's why experts insist that your cleansing routine should be rigorous, especially at night. Proper cleansing helps preserve the skin barrier and allows the skin to regenerate normally . After cleansing, it's best to apply a product tailored to your individual needs, such as an antioxidant serum or a moisturizing formula. The idea that "less is more" is gaining traction: a single product with active ingredients that work synergistically can be more effective than many layers of different products.
Expert advice for effective protection
Choosing the right format is also key. For the beach, maximum protection is recommended, generally in the form of an oil-based emulsion , while for sports, a lighter texture is preferable, although this means reapplying more frequently. For everyday use, makeup with mineral ingredients can offer some protection, but it shouldn't replace sunscreen. And be aware: it's not advisable to wear makeup to the beach, because some cosmetic products contain photosensitizing ingredients that are activated by intense sun exposure.
Another often neglected area is the skin around the eyes, neck, décolleté, hands , and ears. These are areas where sun damage is particularly noticeable , with age spots, loss of elasticity, and premature wrinkles. Applying sunscreen generously and evenly to all of these areas is essential.
Finally, experts remind us that the best sun protection is still avoiding sun exposure during the midday hours. Primary prevention, combined with a consistent sun protection routine and proper nighttime cleansing , is the most effective way to maintain healthy skin and delay the signs of aging. In summer and throughout the year, protecting your skin from the sun is a worthwhile long-term investment.
