The launch of Nivea cream; Irma's role in early advertising and a scandal that threatens the company. Core Themes & Characters The success of Leukoplast; Antonia's struggle for love and a friend's child amidst corporate competition. Irmas Geheimnis (Irma's Secret) Oscar Troplowitz buys Paul C. Beiersdorf's lab; Gerda uses art salons to combat social prejudice. Antonias Hoffnung (Antonia's Hope) For further reading, you can find the series at retailers like Thalia or explore reviews on community sites like Goodreads . The by Lena Johannson is a historical fiction trilogy that follows the founding of the global skincare brand Beiersdorf (the makers of Nivea) in Hamburg. The series centers on three distinct women— Gerda , Antonia , and Irma —whose lives intersect as they navigate social barriers and industrial innovation between 1889 and the early 20th century. Series Overview