(All the more reason to put sunscreen on no matter what!) Chemical sunscreens need a cocktail of chemicals in order to provide both UVA and UVB protection, but zinc oxide has been shown to be an effective filter against both types of rays since it acts as a barrier on top of the skin. Not only that, UVA rays also pass through most windows, so you can be exposed while you’re driving, on an airplane, or even sitting inside your house. UVA rays are also sneakily able to pass right through clouds-so even though you might not burn on a cloudy day, your skin is still absorbing those skin-damaging UVA rays. UVA rays may not burn you, but they penetrate deeper into skin, causing a host of longer-term skin damage issues including wrinkling, brown spots, and an increased risk of skin cancer. What’s the difference between UVA and UVB rays?Īn easy way to remember the difference between the two is that UVA is aging and UVB is burning. We think SPF 50 hits the sweet spot of serious, long-lasting protection. The ratio of UVA protection also decreases as your SPF increases beyond 50 (we’ll get to the importance of protecting against UVA rays in just a moment). So why not just wear SPF 100? Some studies suggest people have a false sense of security the higher numbers go: they apply less, and may forget to reapply. For instance, SPF 15 would mean it takes 15 times as long as it would without sunscreen before your skin burns (assuming you apply enough, don’t go in the water, or sweat it off!). It also refers to the amount of time you can theoretically spend in the sun before burning. For instance, SPF 15 blocks 93% of UVB rays, SPF 30 blocks 97%, and SPF 50 blocks 98%. The SPF number signifies the amount of UVB that the sunscreen blocks. Sunscreen SPF stands for “sun protection factor” and it is a relative measure of how much and how long a sunscreen product will protect you from UVB rays (the culprit of sunburn, skin redness and damage). What does Sunscreen SPF stand for and what do the numbers mean? We obsessively vetted all ingredients in our Pipette sunscreen and ban over 2000 suspect ingredients to make sure our formula is supremely gentle and non-irritating. Non-nano particles are larger than 100 nanometers and are not ingested by aquatic life. The issue with zinc nanoparticles, though, is that they also have an adverse effect on coral reefs, since the particles are small enough for the coral to ingest. Nanoparticles are extra-teeny micronized particles that help make zinc even more transparent. “Non-nano” means we don’t use nanoparticles of zinc oxide in Pipette sunscreen. That’s why Hawaii has banned the use of these sunscreen chemicals-and why we only use mineral non-nano zinc oxide in Pipette sunscreen and our reef-friendly Mineral Sunscreen Broad Spectrum SPF 50. These sunscreen chemicals are found in many sunscreen products on the market and have a detrimental effect on the coral population and the ocean’s ecosystem as a whole. Yet another strike against chemical sunscreens: Some chemical UV blockers like oxybenzone and octinoxate have been shown to bleach and damage coral reefs. Mineral sunscreen is simply better all around and why Pipette sunscreen is formulated with non-nano zinc oxide. Not only can they irritate kids’ (and adults’) delicate skin, some clinical studies suggest they may be hormone disruptors. We find chemical UV blockers far too risky. This reaction can be irritating to sensitive and delicate skin, especially kids’ skin. A chemical sunscreen, on the other hand, penetrates into the skin and absorbs the sun's rays, where they are converted into heat and then released. This keeps the UV rays from penetrating into the skin where damage occurs. Mineral (aka, physical) sunscreen protects against UV light by creating a barrier that deflects UV rays away from the skin’s surface. What is the difference between mineral sunscreen and chemical sunscreen?
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