Dear Heloise: In your hint about window cleaner, what is essential oil? I have everything for the recipe, but I don’t know what essential oil is or where to get it. You like orange because it is refreshing. Where can I buy it?—Leonard Kennedy, via e-mail

Essential oils come from plants, flowers, bark and skin of fruit such as orange or lemon. They smell like the source and are mainly used in aromatherapy. Lavender is one of my favorites and is calming and relaxing. It and orange are found in many cleaning supplies. Eucalyptus is good in steam baths, foot soaks and to relax tired mu...

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