Its thegrand finale to ones skin-care routineand you certainly dont want to skimp on the protection.
But as it turns out, SPF is a bit more complicated than we think.
When you mix your SPF with other products, she says, youre basically diluting it.
Are there specific ingredients that ruin the efficacy of SPF?
Instead, Krupa suggests you should think of it like lemonade.
If you add water to it, youll dilute it and it wont be as strong.
Cara Bondi is a cosmetic chemist with over 22 years of experience at major beauty companies like Seventh Generation, Tata Harper, Ursa Major, and Sol de Janeiro.
In this case, the moisturizer or foundation is water and is diluting the SPF.
You are likely applying about that much moisturizer on your skin with about 14 of a teaspoon.
Layering your skin-care products is key if you want to stay as protected as possible.
Or, find a 2-in-1 product if you think it suits your routine and lifestyle better.
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