Why shouldn’t I go out in the sun after applying perfume or cologne?

Fragrances and colognes contain a much higher concentration of fragrance components than regular beauty products, in abundant variation.
Depending on the type of perfume ingredients and the constitution, skin type, etc. of the wearer, putting on fragrance or cologne then spending a long period of time in direct sunlight may mean UV rays irritate the skin, make it itchy or cause blemishes.
When going outdoors during the day, make sure to apply your perfume or cologne to a part of your body that will not be exposed to direct sunlight.

In addition, if you have weak skin, do not apply perfume or cologne directly to your skin. Instead, apply it to your lingerie or the inside seam of your skirt.
If doing this, be sure to avoid white clothing as not to cause a stain, and do a patch test first.