The periodic table is an instantly recognizable symbol of the elements that form the basis of chemistry. This direct response mail series leveraged the familiarity of the table and took creative license with its meaning to highlight the elements that form the basis of acne control—versatility, tolerability, efficacy, and the ease of use delivered by the Retin-A Micro^® (tretinoin gel) microsphere, 0.04%/0.1%, Pump.