A Creamy Banana Fragrance with a Sweet Dessert Finish. Banana Milkshake Fragrance Oil is a playful gourmand scent that captures the creamy sweetness of a classic banana milkshake. Ripe banana and toasted hazelnut open the fragrance with a warm, cheerful sweetness before melting into a comforting heart of oat cookies. A smooth base of vanilla and milk gives the scent its soft, creamy finish, creating a cosy dessert-inspired aroma for use in a compatible waterless electric scent diffuser.