SK-II is a Japanese prestige skincare brand built around PITERA, a signature bio-ferment ingredient discovered more than 40 years ago. Its best-known product, the Facial Treatment Essence, contains over 90% PITERA and is one of the most awarded essences in the world. At Premiumskin.co you will find original SK-II products, sealed in their retail packaging, shipped with FedEx International Priority with all duties prepaid.