Facial Treatment Essence, SK-II's most famous and lauded product contains more than 90% Piteraa, the miraculous ingredient found over 30 years ago that has remained mostly unchanged. Aside from helping to control the skin surface renewal cycle, its incomparable recipe softly exfoliates the face. In as little as 14 days, you will notice a dramatic change to your face, including a reduction of wrinkles and age spots, a smoothing out of skin texture, an improvement in firmness, and an amazing glow! Enjoy dazzlingly clear skin.