Which fragrance oil do I need for a body spray versus a body oil or roll-on?

The answer depends on your base. For alcohol-based body sprays and perfumes, you need an alcohol-soluble fragrance oil, which is designed to disperse cleanly in alcohol without cloudiness or separation. For oil-based products like roll-ons, body oils, and oil-based perfumes, you need an oil-soluble fragrance oil that will blend smoothly into your carrier oil. Using the wrong type can result in a cloudy or poorly mixed product, so confirm solubility before purchasing.