Celebrities use the exact same primers available to the average shopper. A higher budget means they may opt for pricier options from brands like Tatcha or Armani. Remember that celebrity makeup artists always fit the primer to the celebrity’s skin type and unique needs. Nowadays, some also have their own makeup brands, like Selena Gomez with Rare Beauty or Rihanna with Fenty, so it’s safe to assume they’re using their own branded products.