There’s nothing quite so authentic to a place as getting a spa treatment that uses ingredients from the local area. You connect in a special way to the destination's natural environment, and using fresh, local ingredients in the spa has similar benefits to using fresh, local ingredients in a restaurant: it’s healthier for you and the planet since there’s less fuel used for transport. These six California spas all feature local ingredients in at least one spa treatment, making it an experience you can’t get anywhere else.