The serum’s acids tend to show visible improvement faster since they exfoliate more directly. The créme works more gradually through enzymatic and cellular pathways, with visible brightening typically appearing within four to six weeks and more noticeable results building over eight to twelve weeks of consistent use.
Bill Levins, a marketing professional since the early 1990s, collaborated with clients like Campbell’s Soup and PWC. In 2004, he began working with Reviva Labs, becoming VP of Marketing in January 2018 and President in June 2018. He led the company through challenges, including the founders' deaths and the COVID-19 pandemic. In June 2024, after Reviva Labs' acquisition by Sendayco LLC, Bill became VP of Marketing for Sendayco, overseeing multiple brands.
