This luxurious facial mask contains an indulgent concentration of Pitera in a single application. It immediately and exceptionally immerses your skin in moisturization, resulting in a visibly radiant and crystal clear complexion. This luxurious facial mask contains an indulgent concentration of Pitera in a single application. It immediately and exceptionally immerses your skin in moisturization, resulting in a visibly radiant and crystal clear complexion. After SK-II scientists observed the soft and youthful hands of aged sake brewers, they spent over five years isolating the single yeast strain that held the secret to soft, clear skin. With that, they developed their signature ingredient "Pitera" - a clear liquid rich in vitamins, amino acids, minerals, and organic acids derived from a controlled natural fermentation process.