Sunscreen is a complex topic.
On the one hand, it’s crucial for protecting our skin from harmful UV rays and preventing skin cancer.
However, some have expressed concerns about certain compounds found in many sunscreens.
In this post, we will share sunscreen recommendations, preferred types and brands of sunscreen, and additional tips to protect your skin from damaging UV B rays.
Sunscreen Recommendations
Best Overall: iS CLINICAL Eclipse SPF 50+
Best Skincare: COSMEDIX Peptide-Rich
Best on a Budget: Blue Lizard
Best for Sensitive Face: EltaMD
Sunscreen Concerns and Research
Some experts have expressed concerns about chemical UV filters found in many sunscreens.
They explain that certain ingredients like oxybenzone can be absorbed through the skin into the bloodstream.
There are worries about these chemicals crossing the blood-brain barrier and potentially harming neurons in the brain.
This is particularly concerning because our neurons, which don’t turn over much throughout our lives, are meant to be protected by this barrier.
Traces of sunscreen ingredients have been found in blood and places like breast milk and urine, showing the body does absorb applied chemicals.
While evidence of toxicity in humans is limited at this point, its recommended to apply the precautionary principle when it comes to chemicals penetrating near the vulnerable brain.
More research is still needed, but he has expressed surprise that many chemical sunscreen ingredients are still on the market despite the absorption data.
Given the lack of awareness on this topic, it can be challenging to determine which sunscreens are free of these potentially harmful compounds.
That said, there are sunscreens that are safe, and he encourages everyone to do their research and choose wisely.
Sunscreen Recommendations
Today, many dermatologists recommend mineral sunscreens with zinc oxide and titanium dioxide that sit on top of the skin rather than being absorbed.
See Dr. Darya Rose’s podcast for further information regarding sunscreen safety and science.
Notice I didn’t say to avoid sunscreen but I do think that one should be careful in sunscreen selection: this is a great podcast from @summertomato on the topic: https://t.co/MdbhKBQG2Z
— Andrew D. Huberman, Ph.D. (@hubermanlab) June 23, 2022
Huberman stresses the importance of sunscreen selection.
Looking at the podcast show notes, Dr. Rose recommends iS Clinical Eclipse SPF 50+ as the best all-around choice of sunscreen.
- Safe zinc-based sunscreen
- Free of chemicals that potentially cross blood-brain barrier
- Translucent finish compared to white zinc-based sunscreens
Related: Bryan Johnson Skincare Routine and Recommendations
Sunscreen Alternatives
Dermatologists emphasize the importance of protecting your skin from excessive UVB exposure.
This can be achieved through various means, not just sunscreen.
It’s crucial to be mindful of the intensity of sunlight in your area and the time of year, as these factors can significantly impact UVB exposure.
It is recommended to limit direct sun exposure, particularly when rays are the strongest during midday.
Experts also encourage folks to cover up if they will be outdoors for an extended period.
This includes appropriate attire like long-sleeve shirts and hats.
- Avoid UV skin damage without sunscreen
- Blocks 99% of UVA/UVB rays
- Breathable and quick-dry
- Superior face and scalp UV protection
- Omni-Shade materials blocks UVA and UVB rays
- Vented panel for breathability
Related: What to Wear in Sauna
FAQ
Is sunscreen an endocrine disruptor?
Some chemical sunscreen ingredients like oxybenzone and octinoxate have been associated with endocrine disruption in studies, meaning they may interfere with natural hormone levels. More research is still needed.
Does sunscreen affect testosterone?
Some evidence suggests chemical sunscreens may slightly reduce testosterone levels, while sun exposure tends to increase testosterone. But more studies are needed on this.
What is the safest sunscreen in the world?
Mineral sunscreens with active ingredients zinc oxide and titanium dioxide are considered the safest options since they sit on top of skin rather than being absorbed.
What is the healthiest sunscreen to use?
Look for mineral zinc-based sunscreen without added chemicals.
Why you shouldn’t wear sunscreen everyday?
Some doctors advise no sunscreen when getting short incidental sun exposure (less than 10 to 15 minutes) to allow vitamin D production.
But for extended time outdoors, sunscreen remains important for skin cancer prevention.
Does sunscreen cause thyroid problems?
Some sunscreen chemicals like oxybenzone and octocrylene have been associated with thyroid disruption in animal studies. However, human data is currently limited.
Does sunscreen raise estrogen levels?
Sun exposure raises testosterone and estrogen. Some early evidence suggests sunscreen may slightly inhibit this effect, but more research is needed, specifically on estrogen levels.
What negative side effects can sunscreen have?
Potential concerns beyond endocrine effects include ingredients being absorbed into the bloodstream in significant levels and generating free radicals/oxidative stress when exposed to sun.
Is there a natural sunscreen?
Many brands offer mineral sunscreens with zinc oxide/titanium dioxide and plant-derived ingredients like green tea extract, aloe vera, and antioxidants.
These provide sun protection without harsh added chemicals.
How does sunscreen affect sperm?
A few small studies have linked chemical sunscreen use to declines in sperm count and quality.
The effects of absorbed ingredients on reproductive health need further research.
