What automated discount personalization strategies work for cosmetics?

As a cosmetics e-commerce business owner, I'm struggling to create personalized discount strategies that convert browsers into buyers without devaluing my brand. I've noticed that generic discounts aren't effective, and customers seem overwhelmed by constant promotions. I need sophisticated, data-driven approaches to offer the right discount to the right customer at the right moment, especially in a competitive beauty market where customer experience and perceived value are critical.