Topic
Sunscreen
Sunscreen is the cheapest, least glamorous anti-aging and skin-health product you can buy, and also the most argued about. This hub covers how it works, what the ingredient scare headlines get right and wrong, and how to pick one you will actually wear. Short version: the best sunscreen is the one you like enough to apply generously and reapply.
Sunscreen FAQ
Is sunscreen the same as sunblock?
Functionally, yes. Sunblock is an older marketing word suggesting total protection, and US regulators stopped letting brands use it on labels because no product blocks everything. Today, check for broad-spectrum, SPF 30 or higher, and whether the filters are mineral (zinc oxide, titanium dioxide) or chemical.
Is sunscreen safe to wear every day?
For most people, yes. Major dermatology and health organizations recommend daily sunscreen on exposed skin, and the evidence for sun-related skin damage and skin cancer is far stronger than the concerns about filter absorption. If you want to avoid certain chemical filters, mineral formulas are a well-established alternative.
Can sunscreen stop me from tanning?
Not completely. Sunscreen reduces UV reaching your skin, so you will tan less and burn less, but a tan is itself a sign of UV damage. Missed spots, thin application, and sweating or rubbing it off all mean some UV still gets through.
Does sunscreen expire?
Yes. Look for an expiration date on the package, and toss it once it passes. If there is no date, a bottle that has been baked in a hot car or beach bag, or that looks separated or smells off, is not worth trusting. Replace it rather than stretching it.
How much sunscreen do you actually need?
More than you think. SPF numbers are measured with a thick, standardized layer, and most people apply much less, so real-world protection is lower. A common guideline is about a nickel-sized amount for the face and roughly a shot glass for the body, reapplied about every two hours outdoors.