Miranda Cosgrove's Must Haves, From Luxury to Drugstore

In lieu of spritzing herself with fragrance, Cosgrove opts to scent herself with a hair oil. "It stays on and smells so good all day, and I feel like [using scent in this way] allows me to get a whiff of it, too — not just the people around me," she says.

She's got a number of different oils in her arsenal (and the fact that they make her hair feel as good as it smells is a bonus that she loves), but her current go-to is the Shu Umera Essence Absolu Hair Oil ($72). It's made with Japanese red camellia oil, which is rich in vitamins and antioxidants that nourish and hydrate hair, enhance shine, and protect against heat damage. Plus, as Cosgrove says, "It smells amazing."