The brand's slogan “What’s Your Number?” represents the brand’s mission to provide solutions for each person’s skin concerns. numbuzin is famed for its highly effective toners and serums which are given numerical designations rather than difficult-to-remember names. Its bestsellers include the No. 3 serum, No. 5 serum, No. 6 serum, and No.3 essence toner which are enjoyed and recommended by many K-Beauty fans.