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[music] Hello, I’m Dr. Neal Schultz
[pause]
and welcome to DermTV.
I’m happy to say that many viewers have heard the message and the advice of
the importance of frequently reapplying sunscreen. Some women have asked
though, if I’m wearing make-up on top of my sunscreen and you’re telling me
to reapply my sunscreen as often as you are, does that mean I have to
change my make-up each time because that’s a real hassle. There are too
very important factors involved in getting the full protection of the rated
SPF of any sunscreen. First of course, you need to apply your sunscreen
before any other skincare product, including make-up and second is the
important, as I mentioned, of frequent reapplication of sunscreen after
swimming, after sweating, or even just every three or four hours while
you’re sitting under a tree reading because you’re still experiencing
insensible perspiration where the rate of perspiration is equal to the rate
of evaporation so you don’t feel the sweat accumulating but you’re still
sweating off your sunscreen. So every time you swim, every time you sweat,
and every three or four hours, it’s necessary to reapply your sunscreen.
But if these activities are washing off your sunscreen then you can also be
sure that they are washing off the make-up that is on top of your sunscreen
and if the make-up is gone then there’s no problem in reapplying your
sunscreen and reapplying your make-up. But if these activities aren’t
removing your make-up and your make-up stays intact and you still have a
full face of make-up then there’s a very good chance that the sunscreen
underneath hasn’t been removed, hasn’t been washed off and in that case
then you don’t need to reapply your sunscreen or you’re make-up.