In “Zero to One,” Peter Thiel challenges readers to think about beliefs that few others agree with. For me, it’s the idea that most sunscreens don’t help prevent skin cancer and could even increase the risk. That’s why I’ve been making my own sunscreen for years, although I don’t use it often.
We all know sunburn is bad and should be avoided, but sunscreen isn’t the only solution. While I’m not telling you to ditch sunscreen or ignore your doctor’s advice, I encourage you to do your own research, look at the studies, and use your judgment about sun exposure.
Since sunscreen use became popular, skin cancer rates have gone up. Studies suggest many commercial sunscreens might increase skin cancer risk, partly because they contain chemicals like oxybenzone, which disrupt hormones. Oxybenzone is especially discouraged for children and banned in several places worldwide.
A 2020 study found that active sunscreen ingredients, like avobenzone, are absorbed into the bloodstream, even after a single use. In contrast, my DIY sunscreen uses a mineral barrier that stays on the skin’s surface, unlike chemical sunscreens that are absorbed.
Nowadays, there are more mineral sunscreens with safer ingredients available than when I started making my own. Still, it’s essential to check labels since even “natural” options can have questionable ingredients.
Recent studies show many sunscreen ingredients harm ocean life, especially coral reefs. These chemicals can trigger dormant viruses in algae crucial to corals, causing environmental damage. Some sunscreens have been banned in certain areas for hurting coral reefs, but my natural recipe avoids these harmful ingredients.
Our bodies also need some sun for vitamin D, which is vital for hormone function. Given the combination of vitamin D deficiency and chemical sunscreen content, it’s understandable why some are concerned. I find it hard to agree that moderate sun exposure is harmful since our bodies benefit from vitamin D. I make it a habit to enjoy some sun each day and take supplements like astaxanthin to protect my skin from within.
Given the reasons above, it’s worth questioning if sunscreen is the best or only way to prevent sunburn. Some articles warn that homemade sunscreens can be less effective since their SPF isn’t tested like commercial ones, which could increase the risk of sunburn.
While homemade sunscreens lack formal testing and SPF verification, they also avoid harmful chemical ingredients. Ultimately, sunscreen should be a last resort, with methods like seeking shade or wearing protective clothing preferred.
In my opinion, we shouldn’t treat homemade sunscreens the same as conventional ones, and likewise, rethink how we use mainstream products. The key is to get safe sun exposure, which varies for each person. I suggest doing your research or consulting a knowledgeable naturopath or dermatologist to determine what’s best for you.
I aim for balanced sun exposure without burning, as many of us spend too little time outside. With my genetic makeup making it hard to get enough vitamin D, my doctor advised me to ensure I get it naturally from the sun.
There are limits to healthy sun exposure. When I reach mine, I’ll cover up with clothing as recommended by the Environmental Working Group (EWG), which is effective, economical, and eco-friendly. If I’m in intense sun and can’t cover up, I’ll occasionally use a natural sunscreen, but it’s rare.
Homemade and natural sunscreens may not offer high waterproof or broad-spectrum protection. They might not guard as effectively against UVA/UVB rays. I’m not endorsing skipping sunscreen entirely or overexposing yourself to the sun.
Sun exposure isn’t the only factor in skin cancer risks. Nutrition, like keeping vitamin D levels optimal and avoiding harmful vegetable oils, greatly affects skin health. Antioxidants from fruits and veggies also play a big role, and my diet and supplements reflect these needs.
I make my homemade sunscreen with a blend of waxes, butters, and oils for a moisturizing base, using zinc oxide for SPF, creating a physical UV barrier. Nutrient-rich oils like red raspberry seed oil and carrot seed oil add extra protection.
The final product’s sun protection varies with ingredient amounts. My recipe uses 10% zinc oxide, roughly equal to 6-11 SPF. To boost SPF to about 20, double the zinc oxide, though it’s not formally tested for exact SPF.
For a simpler version, combine coconut oil, shea butter, zinc oxide, and some seed oils for moderate sun protection. Always consult your doctor before trying new products.
This updated recipe solves past issues with product consistency, and it can include skin-safe essential oils for benefits and scent, avoiding phototoxic ones like lemon or lime oil that can cause burns in sunlight.
This simple recipe only needs two ingredients and might offer a 20 SPF. You can also create sunscreen bars with similar ingredients.
If DIY isn’t your thing, I’ve shared favorite store-bought sunscreens in another post.
How does your family approach sunscreen and sun exposure? Share your thoughts!
This article was reviewed by Dr. Scott Soerries, MD, Family Physician and Medical Director of SteadyMD, though it’s not medical advice. It’s always best to consult your doctor.
