Spas with reservation required in California

Sonoma, California

Hotel spa at The Lodge at Sonoma with an outdoor terrace, soaking pool, plunge pool and barrel sauna, open daily 9am-5pm, adults-only, reservation required.

Napa Valley, California

A single-treatment float spa in Napa offering sensory-deprivation float pods with Epsom salt water, plus dedicated parking and walk-in access.

San Diego, California

A Korean-style day spa on Convoy Street in Kearny Mesa offering sauna access, body scrubs and massage, open daily 8:30am to 9pm.

San Diego, California

A day spa in University City, San Diego, open since the late 1990s, offering facials, massage and lymphatic drainage with a monthly membership option.

Los Angeles, California

Day spa in a Montebello strip mall plaza offering facials, massages and body treatments, open daily with walk-ins accepted.

Los Angeles, California

A boutique medical spa in Pico-Robertson focused entirely on facials, from HydraFacial to microdermabrasion, with no body treatments on the menu.

San Diego, California

A massage-focused day spa in San Diego's Gaslamp District offering Swedish, deep tissue and hot stone sessions daily from 10am to 11:30pm.

Ojai, California

A small facial studio in Ojai run by esthetician Allison, offering customized facials, RF skin tightening, microcurrent and waxing by reservation.

San Francisco, California

Adults-only day spa on Market Street in Mission Dolores offering massages and facials by appointment, open daily except Tuesday.

Sonoma, California

A moderate-priced day spa a block off Sonoma Plaza offering massage and facials from a certified therapist and licensed esthetician, with private treatment

Santa Barbara, California

A medical spa on State Street in Santa Barbara offering Botox, fillers, laser hair removal and HydraFacials under physician oversight.

San Diego, California

A Clairemont wellness studio in San Diego pairing acupuncture and bodywork with an infrared sauna and a Himalayan salt room for classes.

Napa Valley, California

Adults-only day spa in Napa offering facials, massage, waxing and makeup services by appointment, open daily 9am to 7pm.

San Francisco, California

A moderate-priced day spa in San Francisco's Mid-Market/SoMa area, open daily with walk-in visits possible but reservations encouraged.

Napa Valley, California

A medical spa in downtown Napa offering Botox, fillers, weight-loss injections, laser treatments and facials, open Thursday through Saturday by appointment.

Santa Barbara, California

A Lower State day spa in Santa Barbara offering massage and aesthetic treatments, with 27 services and both walk-in and reservation booking.

Santa Barbara, California

A State Street halotherapy spa built around a large underground crystal salt cave, with massage, facials and a relaxation lounge.

San Francisco, California

A medical spa in Union Square, San Francisco, focused on injectables, skin resurfacing, microneedling and body contouring, established in 2006.

Sonoma, California

Medical spa in Sonoma, CA offering Botox, dermal fillers, microneedling and chemical peels by appointment, run by RN Tiffany Nunez.

Sonoma, California

Physician-led medical spa in downtown Sonoma offering Botox, fillers, laser and RF treatments, open weekdays by appointment.

Los Angeles, California

Day spa in Pasadena offering facials, scalp therapy and body treatments, with its signature Synergy Rejuvenation Scalp Spa, open daily 10am-7pm.

Lake Tahoe, California

Medical spa in Stateline near Kingsbury Grade offering Botox, fillers, PDO threads and laser skin treatments, by appointment only.

Ojai, California

A family-owned day spa in Ojai, California, open six days a week, offering personalized skin treatments with walk-in and reservation options.

Los Angeles, California

Esthetician-run skincare studio in Del Rey offering facials, acne treatment and micro-infusion, with Japanese-language service available.