Spreadsheet of cosmetic brands that has a pro artist program! Some of them offer influencer tier & essential worker discounts, also brand ambassador programs. The spreadsheet will be gradually updated for you with more companies I research. Since you're the customer, I do advise that you do not share with anyone else. Go ahead & start applying!
 
I layed out for you the:
brand name
requirements
% 
if the pro discount is stackable with public discounts & promotional offers