“We went through an extensive process with [Kendall Jenner] before the contract was signed where she used the product, commented on her results, collaborated with us and made sure that this was a product that worked for her,” Marc Kravets, general manager of Proactiv told WWD, explaining that Jenner's previous methods for clearing her acne had failed. "What she told us is that she tried everything and she got some short-term results and then got the problem back."