A Sephora store in Chongqing, China.Cheng Xin/Getty ImagesSephora's CEO said teenagers only need three products in their skincare routine."Just cleanser, moisturizer, and SPF for a 13-year-old," CEO Artemis Patrick said.Gen Alpha customers have gone viral for snapping up Sephora's expensive skincare products.Sephora's CEO said teenagers only need three skincare products and need to stop buying products inappropriate for their age.In a keynote speech at the National Retail Federation's Big Show on Monday, CEO Artemis Patrick said that she was all about "using the right appropriate skincare for the appropriate age."She said that she had a conversation with her co-speaker, PWC's retail expert Kelly Pedersen, about his 13-year-old daughter "trying to buy products that she shouldn't be putting on her skin."She said, "And I told him to tell her the CEO of Sephora told her not to do that.""Just cleanser, moisturizer, and SPF for a 13-year-old.