Say you wore your favorite shade of red lipstick all through a nasty cold. Do you have toss your gloss now that you’re feeling better?
Thankfully, no. If you just had a cold, you can keep using the lipstick without fear of getting sick again because you’ve built up antibodies to that virus. Strep throat is another case though. If you come down with that, it’s best to toss any lipsticks or glosses because you could get sick from using them.