An award-winning spa in San Franciscio’s Presidio for over 20 years.
Forty minutes of deep-penetrating infrared heat, in a personal sauna that's yours alone. The radiant warmth increases circulation and encourages a gentle, restorative sweat — supporting immune function while giving an overactive nervous system a contained, quiet place to settle. It's a simple, steady practice for finding stillness between the competing demands of the day. Book it on its own, or before or after another treatment. People have used heat and sweat as care for centuries — Finnish saunas, sweat lodges, steam rooms. The instinct behind all of them is the same: warmth helps the body do what it already knows how to do. Infrared is the modern version of that instinct, refined by technology and shaped by clinical research. It works differently than a traditional sauna. Instead of heating the air to 150 degrees or more, infrared light warms the body directly at a comfortable 110–140°F — producing a deeper sweat at a gentler heat, in a session you can actually settle into. The warmth feels closer to sunlight on skin than to a hot room. Our private Sunlighten mPulse saunas deliver three infrared wavelengths, each working at a different depth. Near infrared supports skin health and cell renewal at the surface. Mid infrared reaches soft tissue to support circulation and muscle recovery. Far infrared penetrates deepest, raising core body temperature — clinically shown to increase it by up to three degrees — to drive the sweat behind detoxification, immune support, and cardiovascular benefit. Every session is programmed to a purpose. Choose from six programs built on clinical research — Relaxation, Cardio, Muscle Recovery, Detox, Anti-Aging, and Weight Loss — each blending wavelengths at the right dose for that goal. Chromotherapy lighting adds a gentle layer: choose the color that matches how you want to feel, or let the spectrum cycle. Sessions run 30 to 40 minutes, on their own or paired with a massage or facial. One session leaves most guests feeling light, clear, and energized. The research is clearest about what happens with consistency — the benefits build with regular use, which is why many guests make the sauna a weekly practice rather than an occasional fix.Forty minutes of deep-penetrating infrared heat, in a personal sauna that's yours alone. The radiant warmth increases circulation and encourages a gentle, restorative sweat — supporting immune function while giving an overactive nervous system a contained, quiet place to settle. It's a simple, steady practice for finding stillness between the competing demands of the day. Book it on its own, or before or after another treatment. People have used heat and sweat as care for centuries — Finnish saunas, sweat lodges, steam rooms. The instinct behind all of them is the same: warmth helps the body do what it already knows how to do. Infrared is the modern version of that instinct, refined by technology and shaped by clinical research. It works differently than a traditional sauna. Instead of heating the air to 150 degrees or more, infrared light warms the body directly at a comfortable 110–140°F — producing a deeper sweat at a gentler heat, in a session you can actually settle into. The warmth feels closer to sunlight on skin than to a hot room. Our private Sunlighten mPulse saunas deliver three infrared wavelengths, each working at a different depth. Near infrared supports skin health and cell renewal at the surface. Mid infrared reaches soft tissue to support circulation and muscle recovery. Far infrared penetrates deepest, raising core body temperature — clinically shown to increase it by up to three degrees — to drive the sweat behind detoxification, immune support, and cardiovascular benefit. Every session is programmed to a purpose. Choose from six programs built on clinical research — Relaxation, Cardio, Muscle Recovery, Detox, Anti-Aging, and Weight Loss — each blending wavelengths at the right dose for that goal. Chromotherapy lighting adds a gentle layer: choose the color that matches how you want to feel, or let the spectrum cycle. Sessions run 30 to 40 minutes, on their own or paired with a massage or facial. One session leaves most guests feeling light, clear, and energized. The research is clearest about what happens with consistency — the benefits build with regular use, which is why many guests make the sauna a weekly practice rather than an occasional fix.
Session length 40 minutes Your session includes • A personal infrared sauna, private for your full session • Deep-penetrating radiant heat to support circulation • A gentle, restorative sweat that supports immune function • Time to cool down and rehydrate afterward Good to know • Easy to add before or after a massage or facial • Hydrate well before and after your session • A steady, repeatable practice — many guests book it weekly