Final answer:
The character likely applies some form of cosmetic cover-up such as face-pack or vanishing-cream to alter her appearance, which aligns with the recurring literary theme of societal expectations of women's beauty.
Step-by-step explanation:
When the character tells Winston to turn around, what she puts on her face is not explicitly mentioned in the question. However, from the various references provided, it appears that women in the literary context often used makeup or cosmetics to alter or hide features on their faces. For instance, the mention of a face-pack, vanishing-cream, or attempts to remove a disfiguring mark suggests that a woman might apply various substances to cover up imperfections or to comply with beauty standards of the time.
In one excerpt, Georgiana covers her cheek to hide the terrible mark, while another character, after changing her hair, feels mediocre and unattractive when facing the mirror. Cosmetic cover-up is a recurring theme in these narratives, indicating societal pressures on women to maintain a certain appearance.