Adria Arjona's Must Haves, From a $4 Lip Balm to Her Signature Scent

The Beauty Sandwich's SS01 Secret Sauce ($300)

Being an avid traveler, Arjona keeps the Secret Sauce on her person. "I've been using the sauce for the past two months, and it's a great one, especially since my skin's always so dehydrated," she says.

Pro Tip: The serum-oil hybrid contains a rich blend of vitamins and minerals, like rosehip oil and sea buckthorn oil. To apply, the brand recommends dampening your face with water and using one to two pumps.