Sunscreen
TLDR - Many commercial sunscreens contain harmful chemicals that may do more harm than good. Sunlight is essential for health. Instead of relying on sunscreen, gradually build sun tolerance by increasing exposure over time. When you've reached your limit, cover up.
Chemicals in Sunscreen
Oxybenzone and Octinoxate: These UV filters are capable of penetrating the bloodstream, where they may disrupt hormonal balance. Oxybenzone has been associated with reduced testosterone levels and has been known to trigger allergic reactions.
Homosalate: This compound tends to accumulate in the body more rapidly than it can be eliminated, potentially leading to hormonal disruptions. When exposed to sunlight, it can break down into harmful byproducts.
Octocrylene: This ingredient can degrade into benzophenone, a compound suspected to be carcinogenic. Octocrylene has also been linked to skin allergies and hormonal imbalances.
Impact on Environment
Chemicals like oxybenzone and octinoxate have been shown to cause coral bleaching, damaging coral DNA, and stunting the growth of marine life. These chemicals wash off our bodies and make their way into the ocean, wreaking havoc on marine ecosystems. Even "reef-safe" sunscreens aren't entirely free of harmful chemicals and just do less damage.
Natural Defense Reminder
We have built in defenses against the sun. Reference the Sunlight on Skin post for a reminder on how to build your solar callus.
Melanin: Our bodies produce melanin, a natural protector that absorbs UV radiation. The more sun exposure you receive, the more melanin you produce. This gives you more protection.
UVA and Sunglasses: Exposure to UVA rays triggers melanin production. Wearing sunglasses can block this signal, confusing your body into thinking it doesn't need to ramp up its sun protection.
Diet and Inflammation: Eating a diet high in inflammatory foods can impact your body's ability to protect and heal from sun damage.
Sun Protection Strategy
Support Natural Defense: Build melanin, morning UVA, limit sunglasses, diet.
Time Exposure: Understand the UV concentration in your area and what the cloud coverage is. If you’re getting regular sunlight you should know your limits. Your skin is also an indicator and will start to turn pink.
Cover Up: Hats and long sleeves can be used for protection once your limit has been met.
Go Natural: If you must use sunscreen, opt for mineral based options with tallow, zinc oxide, or titanium dioxide. These ingredients sit on your skin and reflect UV rays instead of absorbing them.