Perky Pair. Make ‘Em Stare. Get a bouncy and perkier look with this clinically proven leave-on boob mask that is formulated with powerful tightening and volumizing ingredients for a firmer, lifted look, and helps to improve the appearance of the bust area. 100 mL. / 3.38 Fl Oz. Clinical Results Our formulas go through rigorous clinical trials conducted on panels of real women. The Trial found that B-PERKY is: Clinically proven to significantly give firmer-looking skin in the breast area after 28 days. Clinically proven to significantly increase breast smoothness after 28 days. Clinically proven to significantly decrease breast roughness after 28 days. *Based on a 56-day clinical Trial on 30 participants.