It helps if you have some sort of retail experience in your background, not necessarily MAKEUP retail, but some sort of selling experience.
Also some counters/MAC stores require you to have some sort of background as a MA etc before applying or have had a job in the "industry" first... I know Nordstrom didn't want to hire me for a MAC Counter position bc I didn't have previous Makeup Retail exp. But my MAC Freestanding store DID hire me even though I have no retail or makeup experience beyond doing some freelance makeup for friends etc.