Tensei Jijou no Chiebukuro - "Jishou" Hitonami Kaishain deshita ga, Zense no Chishiki de Karei ni Otsukae Itashimasu!

Ellie, who worked for a cosmetics company in her previous life, is appointed by chance to be the maid of honor for Ariane, the duchess who is a candidate for the Dauphin's wife. However, when she meets Ariane, she is astonished by her appearance! Her skin is rough, and she is a recluse, completely clad in mourning clothes and a veil! It seems that the cause is her stepmother and stepsisters, who suddenly came into her life after her father's remarriage. Ellie begins to use her knowledge of her previous life to clean up the young lady's skin, but what will she do?