Bustle | What Is Amber Oil? It's Kristen Bell's Favorite Perfume, For Starters Bustle Well, as it turns out, amber oil is a type of essential oil — and it smells amazing (especially according to E! News reporter Giulana Rancic, who actually sniffed Kristen Bell on the Emmys red carpet). It's got a warm, rich, almost pine-like scent ... |