Some By Mi Retinol Intense Reactivating Serum is a skincare product made in Korea. It is designed to reduce signs of aging and boost skin elasticity. The serum contains retinol, retinal, and bakuchiol, which are gentle ingredients for sensitive skin. Additionally, the serum uses patented elastic-liposome technology to ensure that the active ingredients penetrate deep into the skin. The result is a non-sticky, moisturizing finish that does not irritate the skin. The serum has passed both skin irritation testing and the vegan test.