Sun protection doesn't "stack"
I’ve had some really great feedback on my ☀posts- so I decided to share another tip today!
𝗦𝘂𝗻 𝗽𝗿𝗼𝘁𝗲𝗰𝘁𝗶𝗼𝗻 𝗱𝗼𝗲𝘀𝗻’𝘁 “𝘀𝘁𝗮𝗰𝗸.”
Let’s say you’re using a facial sunscreen with SPF 50, and then use a foundation/tinted moisturizer on top that also has SPF 50, you don’t then have SPF 100 protection!
In fact, you likely only have SPF 50 protection!
Why? Most of us don’t actually apply enough sunscreen in the first place. So, by using multiple layers that each offer protection, we are just building up the protection in areas we may have missed or not applied enough product with the initial layer! Its also very likely that when you add a second layer, you disturb the first layer and make up for this during the second application!
When it comes to SPF level, a recent study confirmed that higher SPF is actually more beneficial- again, because most of us don’t apply enough product! So, if you have the choice between SPF 50 or SPF 100- go for the SPF 100 and you’ll likely achieve the protection of an SPF 50! (doi: 10.1016/j.jaad.2017.12.062)