The au naturel trend is hitting us square in the face. Oxygen facials, which enjoyed a flurry of popularity in the late ’90s, are once again one of the most requested treatments at local spas. In addition to getting oxygen-infused creams and masks, as a kicker to a more traditional facial, your face is bathed in an oxygen spray said to plump and freshen the skin by stimulating circulation. It’s also said to kill surface bacteria, cutting down on post-treatment redness and breakouts. A facial you can show off that night? These five spas, we found, best deliver on that claim.

1
BLISS SPA
Clients look like they are in love, won the lottery, or received the job offer of a lifetime after receiving Bliss Spa’s Triple Oxygen Treatment. No wonder it’s the international spa’s most popular facial. The San Francisco staff uses oxygen in nearly all of their facials, but only the Triple Oxygen delivers three doses of bliss—a preextraction oxygen wrap, an oxygen and milk mask, and a vitaminized oxygen spray. And in the hands of aesthetician Ana Martinez, you’ll walk out with nothing less than your best face forward. 181 Third St., 4th floor, S.F., 415-281-0990; Triple Oxygen Treatment, 85 mins, $150.

2
FLYING BEAUTICIANS
This spa’s location off Union Square (they also have an outpost in Mill Valley) makes it a popular lunchtime stop for the Neiman Marcus girls. While co-owner Polina Gerardo’s pore extractions aren’t for the weak, her Oxygen Radiance facials are quite gentle. New technology, like the oxy-oasis applicator, keeps this treatment up-to-date. A cocoon holds oxygen close to the skin while the applicator blows pure oxygen and botanicals onto the face. 166 Geary st., Ste. 900, S.F., 415-391-8929; 18 E. Blithedale, Ste. 11, Mill Valley, 415-381-8134; Oxygen Radiance, 75 mins, $120.

3
SPA RADIANCE
When oxygen facials emerged around 1998, Spa Radiance was doing 10 per week. Just two years later, that number jumped to over 100. In their multistep treatment, first a pomegranate scrub is used to remove surface impurities, then a buttermilk scrub with lactic acids unclogs pores, and an antioxidant fruit-enzyme scrub accelerates cell renewal. A final spray of oxygen caps the experience. Book owner Angelina Umansky for a friends-might-even-think-you’re-pregnant glow. 3011 Fillmore St., S.F., 415-346-6281; Oxygen Boost Go-on-the-Glow Facial, 70 mins, $135.

4
TEASHI
Your skin will look its absolute best immediately after Loryn Herridge’s Pure Oxygen facial. After cleansing and exfoliation, clients are treated to a sumptuous hand massage while steam opens pores for extractions. A rich oxygen serum mist detoxifies and soothes before a customized mask is massaged into the face. Did we mention the treatment includes our new favorite neck and shoulder massage? All of the products are infused with oxygen molecules and contain antioxidant-packed Japanese green tea extract. 2340 polk st., S.F., 415-749-0990; Pure Oxygen facial, 75 mins, $110.

5
TRU SPA
At Tru Spa, each oxygen facial is customized, but all are deep cleaners, meaning the aestheticians spend a lot of time on extractions. In addition to two sprays of oxygen during the TruO2 treatment, Tru sets itself apart with the addition of an O2 “wrap.” A 2 percent oxygen cream is slathered on, then the face is wrapped while the cream does double duty—they say it loosens impurities while softening the skin. A blast afterward minimizes redness, so you can head straight to dinner instead of going home to hide. 750 Kearny St., S.F., 415-399-9700; TruO2 Facial, 70–80 mins, $120.