Description  Blinc Resurf.a.stic Callus is a one-step microdermabrasion, hydration & treatment stick specially formulated to soften toughened skin under feet, on knees, elbows & the balms of your hands. This skin-enriching treatment uses medical-grade, diamond-shaped crystals to instantly exfoliate dead skin cells and expose healthier & more radiant skin. Resurf.a.stic Callus uses larger crystals to deliver a more even and effective results, as well as powerful moisturizers & conditioners to smooth rough skin.