Located in beautiful Western Sonoma County, Osmosis is the only day spa in the U.S. that offers the Cedar Enzyme Bath—a rejuvenating heat treatment from Japan. We also specialize in a variety of 75-minute massage modalities performed by our community of experienced therapists. In reflection of our commitment to wellness and the environment, we feature an array of organic facials, skin care, and waxing services. We welcome you to relax in our authentic meditation garden with a cup of our exclusive blend of organic herbal tea. Shop anytime in our unique spa boutique filled with great gifts and products to support your healthy lifestyle. Gift certificates are available year round for any occasion, either in our boutique or in 30 years! Voted Best Spa by North Bay Bohemian for 17 years running! Named Best Spa North of San Francisco by San Francisco Magazine.