Tatoo of the eyebrows with vegetable dyes fades after 2-3 years.Is this permissable?

Shalom Rav, Rav Ovadia Yosef has a comprehensive response on the topic (Taharat HaBayit III, p. 34) where he allows temporary tattoos for reasons of embarrassment, for example, if a woman’s eyebrows aren’t so visible, or to cover a scar, etc. R. Neventzahl and R. Ezra Batzri allow it as well in such situations. With Love of Israel, Rav Ari Shvat