your formula for wellness

+ modern beauty

Right outside your front door.

boston’s original home for next-level self care.

Just steps from Newbury Street, G2O is your oasis in the bustling city— we’re Boston’s hub for beauty and wellness. Our talented team of experts combined with superior technology awaits to help you create a practice of balance and self-care that works with your lifestyle, not against it. It’s time to feel authentically you.

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bringing you exclusive specials

2026 Brings Major Membership Upgrades

Enjoy massive improvements to our award-winning Membership Key offerings beginning January 1, 2026!

Guided by all of your valuable feedback, we’ve simplified our offerings, identified the perks that matter most to you, and made them more attainable.

For starters, there are two tiers of general memberships. To put it simply…

Our Essential Wellness Key, is staying exactly as it was in 2025, including the price of $179 per month.

The second tier, our reimagined Serenity Key, offers you (among other things) 15% off ALL services. That perk is something that, as of 2025, was only available as part of our $360 per month membership. As of January 1, 2026, you can now get that same perk for ONLY $199 per month.

If you currently have the Essential Wellness Key and want to upgrade, let our concierge team know when it’s time to renew, and enjoy 15% off all services, 3 additional complimentary Halotherapy sessions per month, + more!

We’ve also reimagined two Specialty Membership Keys.

The Recovery Key, which is the perfect fit for athletes or those with an active lifestyle, now features 3 additional Halotherapy sessions per month, 1 additional Cold Plunge session per month AND a brand new perk that gives you 25% OFF all subsequent cold plunge, Halotherapy, or aromatherapy steam sessions per month! With all that added value, the price is staying the same at $195 per month.

Our second Specialty Key, the Oasis Keyis our ultimate amenities pass. With a new lower price of $299 per month, enjoy unlimited access to our amenities ANY DAY Tuesday-Sun, not just on days you book a service. In addition to a lower price, we’ve increased the number of complimentary Halotherapy sessions per month. And don’t forget, this is the only membership key that gives your guests a 10% discount for select services.

These improvements will go into effect as of January 1, 2026, not just for new members, but for existing members as well!

bringing you exclusive specials

NEW Yon-Ka Serum Omega soothes skin + seals in hydration

Are you prepared to protect your skin as it’s bombarded by Boston’s harsh winter months?

The latest from the Yon-Ka Paris Intensive line, Serum Omega, acts as the final flourish to your routine. Serum Omega is the final step before applying SPF and makeup.

The Omega-rich formula creates a barrier that seals in hydration and nourishing ingredients from your serums and moisturizers.

This oil-in-serum helps repair and soothe existing damage to inflamed skin and reduces redness and transdermal water loss to combat even the most blustery days Boston throws at us.

Ask your esthetician for more information on how Serum Omega can perfectly punctuate your skincare routine during your next visit.

bringing you exclusive specials

A Serious Series Upgrade

We have heard your feedback and are pleased to announce that we are relaunching our series. Now you will receive a complimentary service with your series purchase instead of 1/2 off a service as was offered previously.

As of September 1, we updated our series offering to Buy 4, Get 1 Complimentary for services available as a series.

We have seen that so many of you have caught on to the great savings you can get via our series, and we are thrilled to provide you with even more value.

For more details, click below, and scroll to “Spa Series.”

bringing you exclusive specials

Day Passes Now Available

Whether you’re looking to relax or let off some steam between appointments, you can now enjoy our amenities with Day Pass options.

Day Passes provide you with access to our Co-ed Sauna, Steam Room, Locker Room, Robes, Slippers, Fireside Lounge, + Relaxation Lounge.

Single-Day Weekday Pass (Tuesday – Friday) – $60

Single-Day Weekend Pass (Saturday – Sunday) – $80

4-Day Weekday Pass (All 4 Days, Tuesday – Friday) – $180

*Additional space for Day Pass holders is limited, and we cannot guarantee all amenities will be available during your visit. Access and use of amenities is subject to availability. Day Pass Holders will need to show a photo ID at check-in to gain access to our amenities. If you decide to book a service during your visit, the value of your day pass will be applied to the cost of your service, but service must be performed on day that you purchased the Day Pass. This is non-transferable and will not roll over.

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Reviews

I’m so happy that Nadja was my stylist! 12 out of 10 perfect! Super nice, very hospitable, AND MY HAIR LOOKS AMAZING! I’ve given her business cards to several friends! I will definitely be back!
— Courtney C.
Perfect morning at the spa! It was a birthday treat from my daughter....I enjoyed the Experience Room and the Salt Room. Both were very relaxing! Spotless facility and top notch staff.
— Heather B.
Amazing facilities, great services. Had a signature facial done and it was so relaxing and my skin glowed for days after.
— Kathryn O.
Great experience!! The staff was welcoming and the space is beautiful. Sasha, works in the spa and she performs my brow tweezing. She does a perfect job! She is the only one I trust to shape my brows! I’m always so pleased.
— Lauren D.
From day one of going into this spa I was greeted by Dave treated very special all of my needs were taken care of. The staff is professional, respectful and ensure that you have a wonderful time. I love feeling more relaxed than when I came in I so appreciate the staff taking that extra time to make sure that my needs were mad and that I was okay this is what service should look like 365 days out the year.
— Gloria W.
I received an incredible signature facial from Alina! She was so kind and knowledgeable, and she took the time to discuss my skin concerns with me. I felt so relaxed and rejuvenated after! Also, the facilities/amenities at this spa were fantastic. Overall very impressed and I’ll definitely be back!
— Taylor S.
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