Los Angeles Magazine Recently Selected Cristiana Skin Care at Piele Skin Boutique as The Best of LA. Spa dilettantes need not apply. The Deep Cleansing Facial at the new Cristiana Skin Care- Piele Skin Boutique in Beverly Hills leaves skin so immaculate, it actually lightens the epidermis a shade or two. Co-owner Cristiana Schneider, a 24-year veteran of the revered Thibiant spa, degrimes the old-fashioned way by manually extracting gunk from the pores after an acid-based peel loosens things up. Expect a modicum of discomfort: The Romanian-born aesthetician often spends more than a third of the 70-minute treatment squeezing until what’s left is a squeaky-clean visage.