Sulwhasoo is celebrating the 20th anniversary of its First Care Activating Serum, one of the first skin boosters on the market, with a limited-edition, value-sized bottle, decorated with the brand’s signature plum blossom design. A Sheet Mask version, which aims to boost skin radiance, has also been created and is designed for usage one to two times a week in concert with the serum. The serum is the brand’s number-one selling item in Korea.

First Care has had several iterations over the years. The first-generation serum made its debut in 1997 as the first boosting essence based on traditional Korean herbal medicine, opening up a whole new category within beauty and changing beauty routines in Korea and abroad.

In response to positive customer feedback, the First Care Activating Serum was upgraded in 2004, with the addition of jujube and Milk Vetch root extracts. And in 2009, the third-generation rolled out, featuring Dwarf Lilyturf and licorice extracts, instead of water, to stimulate moisturizing effects. In 2010, Sulwhasoo launched in the U.S. at New York’s Bergdorf Goodman; First Care Activating Serum quickly became a best seller. And, its latest version came to market in 2015 with an upgraded JAUM Balancing Complex to offer greater boosting effects and skin balancing benefits.

First Care Activating Serum and Sheet Mask are available now at Bergdorf Goodman, and at select Neiman Marcus, Bloomingdale’s and Nordstrom counters, and on A 120-ml bottle of serum retails for $140; a box of five sheet masks sells for $60.