Discover Sonoma County's Premier
Destination Day Spa and Vitality Center

Come and experience your own transformation in this beautiful and healing sanctuary. Enjoy the magnificent location, a staff devoted to your wellbeing, authentic Japanese gardens, the rejuvenating Cedar Enzyme Baths, and marvelous massage and organic skin care.

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Welcome to Paradise

Nestled between river and coast, redwoods and vineyards - gateway to the Russian River Playground, Osmosis is close to everything wonderful in Western Sonoma County...and only 60 miles from San Francisco! Plan your visit with our lodging, restaurant and activity guides. Learn more about our fascinating area - one of the most beautiful destinations in Northern California. And so easy to reach by car or commercial flight directly into Santa Rosa (STS).

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Experience our Renowned Cedar Enzyme Bath

Experience transformation in the only Cedar Enzyme Bath in North America and discover its powerful health benefits. Immersed in a warm bed of softly ground evergreens, your body is evenly supported with a gentle, penetrating heat. The warmth is generated biologically by fermentation. The bath boosts your metabolism and circulation, casts your skin in a radiant glow, and is profoundly relaxing.

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Enjoy a 75-Minute Massage or Organic Facial

The healing power of good hands remains the best way to relieve stress and revive body and soul. We specialize in exceptional 75-minute massage. Every day our guests tell us “that was the best massage of my life.” Look and feel fantastic with one of our amazing organic facials or the new rejuvenating Men's Zen head and shoulders experience. We feature botanically derived, certified-organic skin care products from Organic Male OM4 and Phyts which will simply amaze you! 


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Feel Rejuvenated in Our Meditation Garden

The culmination of the Osmosis experience is the Meditation Garden on our very private 5-acre sanctuary. This serene Zen garden will move you to deeper levels of inner peace and tranquility. It’s the perfect place to savor the increased levels of sensory awareness and well-being that follow spa treatments.




Celebrate our 30th Anniversary with us!
Wednesday May 20, 5-9pm

Oysters, Wine, Kombucha on tap, Live Music, Chair Massage, Footbaths and more!

Give the Gift of Osmosis

Print gift cards instantly online, or have your perfect gift sent via mail.
  Click or call (707) 823-8231

Osmosis Voted #1 Again!
Best of Boho Logo
Winner Best Day Spa
17 Years Running!

Upcoming Events at Osmosis

We have many exciting events this Spring; Garden Tours, Meditation Retreats, Local's Night Celebrations and more!


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Fantastic Getaway Specials

Enjoy the relaxing combination of spa treatments at Osmosis Day Spa paired with an overnight stay
in deluxe nearby accommodations.
Packages starting at $359!!!

Osmosis is a Green Spa

As a founding member of the Green Spa Network, we are leading the way in bringing sustainable practices to the spa industry. Greening Osmosis is an ongoing process, and we are commited! Learn More