Beauty Bosses Slideshow

Evo Spa boutique
Evo Spa

Website: evo-spa.com
Open since: 2004
Facilities: 2,665 square feet with 9 treatment rooms, his-and-hers locker rooms, relaxation area and boutique
No. of employees: 40 (16 are full-time)
Product lines: Éminence, Osmosis, CosMedix, Arcona and more
Most popular treatments: Kaya Kalpa body treatment with shirodhara (90 min./$225), Epicuren lifting and toning facial (75 min./$135), Sacred Hot Stone massage (75 min./$130), Raindrop Ritual massage (90 min./$155)

Amelia Glynn is a freelance writer and author based in San Francisco.