Kita no Mandokoro-sama no Okeshougakari: Sengoku no Yo datte Biyou Otaku wa Shumi ni Ikitai no desu @COMIC

One day, a 30 years old girl obsessed with cosmetics wakes up to find herself in the Sengoku Period, reborn as Yone, the daughter of Yamauchi Kazutoyo, the samurai lord of Nagahama Castle in Omi Province. However, this era doesn't even have skin lotion, so Yone decides to create her own. She uses her knowledge to develop a line of cosmetics, and is so successful that she becomes a beautician to Kita-no-Mandokoro, the wife of the Imperial Regent. A huge-scale historical fantasy about a happy-go-lucky girl who begins to wield great influence on the end of the Sengoku Period!