I'm wondering about amount of sunscreen. I read on the Skin Cancer Foundation's website that people need to apply a full ounce of sunscreen to their entire body to get full broad spectrum protection. Now, at home, I certainly could measure one ounce and do this, but I have not, and doing it out and about is... prohibitive. We don't get b…
I'm wondering about amount of sunscreen. I read on the Skin Cancer Foundation's website that people need to apply a full ounce of sunscreen to their entire body to get full broad spectrum protection. Now, at home, I certainly could measure one ounce and do this, but I have not, and doing it out and about is... prohibitive. We don't get burned or even tan, really, with the amount of sunscreen I apply. Is not getting burned/tan the measure of success here?
Also, one ounce on me, a 6ft tall person is a lot different than one ounce on the kid at 3'7".
Maybe you could email Dr Wong to ask where exactly you look for the documentation of each company’s assumptions for amount of product per square inch? Each company definitely has that information and I think it’s filed with the government in a way the public can access. (Clearly, I’m fuzzy on the details.)
In a few places on Dr Wong’s YouTube channel, she discusses how spf calculations are made, and sometimes she shows the documentation lists a company’s assumptions for how much product per square centimeter. I have just never paused the video to note the section headings on the paperwork.
[In one particularly funny video, she carefully calculates the surface area of her own face, then applies the product in the amount the company says is necessary to achieve the listed spf — except the product in that video is a powder sunscreen where it’s impossible to get the spf listed unless you are willing to look -insane-. Also I think you have to powder so heavily that it would actually fall off your face. It was a funny video but also a powerful lesson. She’s a great science educator.]
I don’t think she’s done a how-to for finding each company’s documents for amount of product, but maybe she’ll consider doing a video on that topic.
I'm wondering about amount of sunscreen. I read on the Skin Cancer Foundation's website that people need to apply a full ounce of sunscreen to their entire body to get full broad spectrum protection. Now, at home, I certainly could measure one ounce and do this, but I have not, and doing it out and about is... prohibitive. We don't get burned or even tan, really, with the amount of sunscreen I apply. Is not getting burned/tan the measure of success here?
Also, one ounce on me, a 6ft tall person is a lot different than one ounce on the kid at 3'7".
Maybe you could email Dr Wong to ask where exactly you look for the documentation of each company’s assumptions for amount of product per square inch? Each company definitely has that information and I think it’s filed with the government in a way the public can access. (Clearly, I’m fuzzy on the details.)
In a few places on Dr Wong’s YouTube channel, she discusses how spf calculations are made, and sometimes she shows the documentation lists a company’s assumptions for how much product per square centimeter. I have just never paused the video to note the section headings on the paperwork.
[In one particularly funny video, she carefully calculates the surface area of her own face, then applies the product in the amount the company says is necessary to achieve the listed spf — except the product in that video is a powder sunscreen where it’s impossible to get the spf listed unless you are willing to look -insane-. Also I think you have to powder so heavily that it would actually fall off your face. It was a funny video but also a powerful lesson. She’s a great science educator.]
I don’t think she’s done a how-to for finding each company’s documents for amount of product, but maybe she’ll consider doing a video on that topic.