It seems to me that today it is my turn to do some spam. While John's definition of the English term makeup artist is very clear, it turns out that a category of cosmetics company promoter has been invented where a social makeup artist who somehow represents them is chosen in different countries, and is called 'national makeup artist' because they are themselves "makeup artists in their country".
NATIONAL MAKEUP ARTIST Let's get this straight. A makeup artist or MUA is a person dedicated to working with the human body, applying makeup, prosthetics and other management for television, theatre, fashion, fashion, fashion, magazines and other similar productions, including everything related to modeling. However, the queryed expression does not exist. What does exist is the National Makeup Artist Day, or the day of celebration of artistic makeup, which is the third Wednesday of November of home year. On this occasion is awarded the annual George Westmore Award, a stylist who introduced the wig and a makeup department at Selig film studios, in 1917.