Dr. Teo Soleymani

What you're looking for is broad spectrum coverage, which almost all mineral-based sunscreens provide. Broad spectrum meaning UVA and UVB. And we know these two UV forms do different things in the skin. We know that UVB is more implicated in redness and some early skin cancer changes. We know UVA is linked to premature photoaging and certain melanomas.

What you're looking for is broad spectrum coverage, which almost all mineral-based sunscreens provide. Broad spectrum meaning UVA and UVB. And we know these two UV forms do different things in the skin. We know that UVB is more implicated in redness and some early skin cancer changes. We know UVA is linked to premature photoaging and certain melanomas.

So you want something that provides broad spectrum coverage. You're looking for a number, the SPF we talk about. You're looking for a number above 30. Why 30? Because every study that looked at defining the SPF required you to put a certain amount on the skin. Generally, it's an entire shot glass worth of the product on sun exposed skin.

So you want something that provides broad spectrum coverage. You're looking for a number, the SPF we talk about. You're looking for a number above 30. Why 30? Because every study that looked at defining the SPF required you to put a certain amount on the skin. Generally, it's an entire shot glass worth of the product on sun exposed skin.

So you want something that provides broad spectrum coverage. You're looking for a number, the SPF we talk about. You're looking for a number above 30. Why 30? Because every study that looked at defining the SPF required you to put a certain amount on the skin. Generally, it's an entire shot glass worth of the product on sun exposed skin.

Most of the time in real world practice, people don't put on that much. They put on maybe half that. So what you're really getting when you buy something that's SPF 15 is like an SPF of 8. So if you're looking for something that provides protection, SPF 30 or greater is higher. Higher the zinc concentration, the better it protects against UV invisible light. The chalkier it may go on.

Most of the time in real world practice, people don't put on that much. They put on maybe half that. So what you're really getting when you buy something that's SPF 15 is like an SPF of 8. So if you're looking for something that provides protection, SPF 30 or greater is higher. Higher the zinc concentration, the better it protects against UV invisible light. The chalkier it may go on.

Most of the time in real world practice, people don't put on that much. They put on maybe half that. So what you're really getting when you buy something that's SPF 15 is like an SPF of 8. So if you're looking for something that provides protection, SPF 30 or greater is higher. Higher the zinc concentration, the better it protects against UV invisible light. The chalkier it may go on.

So that's kind of where you find that balance. That's actually where the chemical sunscreens came about, is the cosmeceutical industry finding things that felt nicer on the skin so that people could put makeup on without that grainy chalkiness. But in doing so, we ran into some issues.

So that's kind of where you find that balance. That's actually where the chemical sunscreens came about, is the cosmeceutical industry finding things that felt nicer on the skin so that people could put makeup on without that grainy chalkiness. But in doing so, we ran into some issues.

So that's kind of where you find that balance. That's actually where the chemical sunscreens came about, is the cosmeceutical industry finding things that felt nicer on the skin so that people could put makeup on without that grainy chalkiness. But in doing so, we ran into some issues.

It's not unjustified to think that. They are organic phenolic compounds. They are hydro... They're lipophilic, meaning they can cross membranes very easily, which is why they run into this endocrine disruption and some nervous system dysregulation. Whether that's been validated to be problematic in humans has yet to be seen, but at least in vitro studies in certain animal models, we see this.

It's not unjustified to think that. They are organic phenolic compounds. They are hydro... They're lipophilic, meaning they can cross membranes very easily, which is why they run into this endocrine disruption and some nervous system dysregulation. Whether that's been validated to be problematic in humans has yet to be seen, but at least in vitro studies in certain animal models, we see this.

It's not unjustified to think that. They are organic phenolic compounds. They are hydro... They're lipophilic, meaning they can cross membranes very easily, which is why they run into this endocrine disruption and some nervous system dysregulation. Whether that's been validated to be problematic in humans has yet to be seen, but at least in vitro studies in certain animal models, we see this.

So when you apply a certain concentration and with that 2020 study that showed that we're seeing it in the blood at levels that are 200 to 500 times the upper limit of normal as defined by sunscreen criteria, Now we have to scratch our head. Where is this circulating? Where is this going? Are we collecting it in our adipose tissue? If we're collecting it there, we may be collecting it up here.

So when you apply a certain concentration and with that 2020 study that showed that we're seeing it in the blood at levels that are 200 to 500 times the upper limit of normal as defined by sunscreen criteria, Now we have to scratch our head. Where is this circulating? Where is this going? Are we collecting it in our adipose tissue? If we're collecting it there, we may be collecting it up here.

So when you apply a certain concentration and with that 2020 study that showed that we're seeing it in the blood at levels that are 200 to 500 times the upper limit of normal as defined by sunscreen criteria, Now we have to scratch our head. Where is this circulating? Where is this going? Are we collecting it in our adipose tissue? If we're collecting it there, we may be collecting it up here.

We may be collecting it in the nerves. So it's a really fascinating world to see where we're going with these. And in fact, the 16 most common chemicals that in 99 were everywhere from spray sunscreens and bottles and things like that are now being defied as, hmm, question mark, maybe not safe by the FDA, the very company that regulates it.

We may be collecting it in the nerves. So it's a really fascinating world to see where we're going with these. And in fact, the 16 most common chemicals that in 99 were everywhere from spray sunscreens and bottles and things like that are now being defied as, hmm, question mark, maybe not safe by the FDA, the very company that regulates it.

We may be collecting it in the nerves. So it's a really fascinating world to see where we're going with these. And in fact, the 16 most common chemicals that in 99 were everywhere from spray sunscreens and bottles and things like that are now being defied as, hmm, question mark, maybe not safe by the FDA, the very company that regulates it.