SK-II is a luxury skincare brand known for its high-quality products that focus on anti-aging and skin rejuvenation. The brand's signature ingredient is Pitera, a natural yeast extract rich in vitamins, amino acids, and minerals, which helps improve skin texture and radiance. Founded in Japan in the 1980s, SK-II gained popularity for its facial treatment essence, which is often referred to as a "miracle water." The brand emphasizes a science-driven approach to skincare, combining traditional Japanese beauty practices with modern technology to create effective formulations for various skin concerns.