Elizabeth Olsen has been exposed to the Hollywood scene since she was a child. She is the little sister of Ashley and Mary-Kate Olsen, after all.

Now with a thriving career of her own — she is in the latest Marvel movie, “Avengers: Endgame,” out April 26, as Wanda Maximoff (a.k.a., the Scarlet Witch), and has a TV series for fall called “WandaVision” — Ms. Olsen, 30, is taking it all in stride with a rigorous fitness and skin-care regimen. It doesn’t hurt that she is the latest ambassador for Bobbi Brown makeup.

You won’t find her scouring Instagram for her beauty looks, though. She relies on word of mouth and advice from her sisters and friends, and she’s game to try all sorts of products. Just look in her fridge and you may find … yes, placenta serum.

Skin Care

Lately I’ve been having some weird chin issue. I’m not sure if it’s a rash or a breakout or something else. It’s been around for two months, so this morning I did something different. I used the micellaire water from Biologique Recherche, and then the P50 exfoliant.