Gisele Bündchen's effortless waves have practically become their own aesthetic - the kind of glossy, undone texture that feels both beachy and impossibly effortless. And while her Brazilian roots certainly don't hurt, her secret weapon is actually a hydrating hair oil that's marked down for Cyber Monday. According to Harper's Bazaar, her stylist, David Von Cannon, used Sol de Janeiro's Brazilian Gloss Hair Oil to craft her 2023 Met Gala waves. He chose it for a "light and airy" finish with "maximum shine," which sounds especially appealing with winter dryness approaching.