l have this idea for a character,and one of their traits is that they like wearing makeup,but l want to know lf makeup is commonly sold in stores,or if they would have to make it themselves,and if so,what skill/s would be needed to make the makeup. (lipsticks,eyeshadow ect)

 edit:l know a disguise kit exists,but l dont know exactly whats in it or if makeup would count.

(yeah,l know makeup has existed for thousands of years. the question is about availability to common folk)

Up the GM, but in real history, cosmetics have been commercially available for thousands of years.

Quote from DnDNewper >>

 edit:l know a disguise kit exists,but l dont know exactly whats in it or if makeup would count.

 Here is a list of disguise kit components from XGtE:

Components. A disguise kit includes cosmetics, hair dye, small props, and a few pieces of clothing.

I don't imagine they are as plentiful as modern cosmetics, but should cover blush, concealer, etc.

Quote from DxJxC >>

Quote from DnDNewper >>

 edit:l know a disguise kit exists,but l dont know exactly whats in it or if makeup would count.

 Here is a list of disguise kit components from XGtE:

Components. A disguise kit includes cosmetics, hair dye, small props, and a few pieces of clothing.

I don't imagine they are as plentiful as modern cosmetics, but should cover blush, concealer, etc.

 good to know,thanks.

Egyptian hyoroglophs show them using makeup a long time ago.