Summer is a time for pool days, beach vacations, and afternoons spent soaking up the sunshine. But as temperatures rise, so do questions about how to properly care for our skin.
Do you really need sunscreen every day? Which SPF should I use? Does sunscreen even work? Are mineral sunscreens truly better?
According to dermatologists at Stanford Medicine, much of the confusion surrounding sunscreen stems from misinformation circulating online. The main message is that sunscreen remains one of the most important tools for protecting both the health and appearance of your skin.
Sunscreen Does More Than Prevent a Sunburn
Many people reach for sunscreen in order to avoid turning bright red after a day outdoors, but its benefits extend far beyond preventing sunburn.
Ultraviolet radiation damages the skin in two major ways. UVB rays are primarily responsible for sunburn and direct DNA damage that can contribute to skin cancer. UVA rays penetrate deeper into the skin, accelerating the breakdown of collagen and elastin, which are the proteins that help skin maintain its firmness and elasticity.
That means sunscreen can play an important role in preserving your skin’s appearance over time.
“Most people know that sunscreen can help prevent sun-related skin cancer, but they don’t know the impact on photo-aging,” said Stanford dermatologist Zakia Rahman. “A lot of people want their skin to look better, and UV light really accelerates premature aging of the skin.”
Mineral vs. Chemical Sunscreen: Which is better?
The sunscreen aisle can feel overwhelming, with labels promising everything from reef safety to invisible finishes.
According to Stanford, both mineral and chemical sunscreens can be effective when used correctly.
Mineral formulas typically contain zinc oxide or titanium dioxide and work by reflecting and scattering UV rays. They may be a good choice for people with sensitive skin because they are less likely to cause irritation.
While chemical sunscreens absorb UV rays before they can damage the skin. Dermatologists note that these formulations often provide broader UVA protection and can be easier to apply evenly.
With this being said, the takeaway seems to be that the best sunscreen is the one you’ll use consistently.
Higher SPF isn’t Always Necessary
While it may be tempting to assume SPF 100 offers better protection than SPF 30 dramatically, the difference isn’t as significant as many people believe.
According to Stanford dermatologists, SPF 15 blocks about 93% of UVB radiation, SPF 30 blocks approximately 97%, and SPF 50 blocks around 98%.
It is recommended to choose a broad-spectrum sunscreen with an SPF of at least 30 and focus on proper application and reapplication instead of chasing the highest number on the bottle.
If you’re spending the day outdoors, sunscreen should be reapplied every two hours and after swimming or excessive sweating.
Most People Aren’t Using Enough Sunscreen
Even the best sunscreen won’t work effectively if it isn’t applied properly. Stanford pediatric dermatologist Joyce Teng noted that many people underestimate how much sunscreen they need.
“If an active teen or adult has a 6 or 8 ounce bottle of sunscreen they’re using all summer, there’s no way they’re using enough,” Teng said. “If you’re outside regularly, that bottle should last about two weeks.”
Dermatologists also recommend pairing sunscreen with other forms of sun protection, including sunglasses, wide-brimmed hats, UPF clothing, and seeking shade during peak sunlight hours.
Don’t Let Fear Override the Facts
Concerns about sunscreen ingredients have become increasingly common, particularly on social media,
Stanford experts acknowledge that questions about ingredient safety deserve thoughtful discussion. However, they emphasize that current evidence supports sunscreen as a safe and effective tool for reducing the risk of skin cancer and minimizing long-term skin damage.
For individuals with sensitivities, fragrance-free mineral options may provide an alternative that feels more comfortable to use.
A Balanced Approach to Summer
Dermatologists aren’t suggesting people stay indoors all season.
Instead, they advocate for a balanced approach that allows people to enjoy the physical and mental health benefits of spending time outside while minimizing unnecessary UV exposure.
Summer skin care doesn’t have to be complicated. Daily sunscreen, smart sun habits, and a routine you’ll be consistent with may be the most effective beauty advice of all.
After all, healthy skin isn’t just about looking good this season; it’s about protecting it for years to come.
Comments