We know we can count on the beloved YSL mascara for long, lush lashes. But some occasions call for an extra boost to really get that effet faux cils. Enter Fast Lash by Tweezerman. One application of the glittering snowflakes* in between coats of mascara and lashes are transformed into glorious butterfly wings. Bonus: Fast Lash works with any type of mascara and washes off with soap and water.