Powder still has to fight the legends and myths of yesteryear. So one hears even today: "Powder clogs the pores" or "The skin can not breathe".
This was certainly true about 30 years ago. At that time, the make-up products actually consisted of completely different ingredients:
the women used powders based on rice starch. The starch swelled on the skin and clogged the pores.
Inappropriate pigments and certain fats such as cocoa butter were also responsible for clogged pores.
… and today
Today's modern powders no longer clog pores. At most a thick theatrical make-up or white powder in the style of a Japanese geisha can prevent the skin from breathing.
Nowadays, powder consists of skin-friendly talc or natural silicates. These basic substances are supplemented by moisture stabilizers, oils and sometimes also ground silk as well as antiseptic and anti-inflammatory substances. Since these components do not swell, they can not clog pores.
By the way: make-ups and powders contain fats - why? They are necessary for the finely ground pigments to adhere to the skin.