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

The Wellness Night Cap

When considering ways to improve your sleep hygiene for a deeper, more restful night’s sleep, ask yourself if you have a proper nighttime routine. A relaxing shower or bath before bed can help prime you for maximized slumber.

At the very least, you should be cleansing your face to be free of the oils, dirt, and other environmental irritants that you’ve accumulated throughout the day. We don’t want to bring that with us as we rest our head on our pillow (more on your pillows later).

To help you begin to wind down for the day, this March, there are two ways G2O will help kickstart your new nighttime routine.

We’re calling it the Wellness Night Cap.

For the month of March, when you request a 90-minute facial or massage as your service provider’s final appointment of the evening, you will receive a complimentary, full-size Serum CBD ($128 value). As if the post-service serenity wasn’t enough reason to end your day with us, this soothing, night serum from Yon-Ka helps to fight skin damage due to stress and lack of sleep. It can be used alone or layered under your favorite night cream.

Or

When you request your stylist’s final appointment of the evening for color and a haircut/blow dry, receive a complimentary full-size Kerastase Magic Night Serum ($62 value). Multitasking doesn’t have to be stressful, when you build nourishing your hair for increased shine and less breakage into your nightly routine. Apply the night serum to your lengths and ends with no need to rinse in the morning.

Don’t wait to book, because these spots will fill quickly.

*Subject to availability and while supplies last. This promotion is only applicable for service providers who end their day at 6pm or later. You must mention this promotion at time of booking to receive the Serum CBD or Magic Night Serum. If you book online, send us a text letting us know you’d like to take advantage of the Night Cap promotion.

bringing you exclusive specials

NEW: G2O Mugs + Harney & Sons Fine Teas

If you’ve visited us over the past month and paused to enjoy a cup of tea, you may have noticed our new mugs featuring our logo.

We heard from many of you asking if these would be available for sale, and we’re happy to share that the mugs can now be found for sale in our boutique alongside a selection of some of your favorite flavors Harney & Sons Fine Teas.

What better way to remind you to keep up your wellness routine than by starting your day with a taste of G2O?

Take one home during your next visit.

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!

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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.
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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