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
Membership Keyholder Preview for our new Salt Cave service starts now!
A Halo Dual Skin Therapy session pairs halotherapy and red-light therapy to amplify the benefits that each modality can provide for improved skin health. These dual therapies work synergistically to address issues for people with skin conditions like eczema, psoriasis, acne, and dermatitis.
Skin benefits of Halotherapy:
The particles of salt, about the size of red blood cells, have anti-inflammatory and anti-bacterial properties that reduce redness and destroy acne-causing bacteria.
The salt also exfoliates the surface of the skin, helping to remove dead skin and unclog pores.
As the salt settles on your skin, the particles attract and retain moisture, hydrating and improving your skin’s pH.
Skin benefits of Red Light Therapy:
RLT works from the inside out, improving skin cell function that may be affected by conditioners like eczema.
RLT has anti-inflammatory benefits, reducing redness and itchiness.
RLT can also boost collogen, further helping to retain moisture in your skin.
These effects can only improve exposed skin, so for the first time we are offering our clients additional privacy that is not available during a typical Halotherapy session. If you book the Halo Dual Skin Therapy service, the salt cave is reserved just for you and up to one guest to join you. In order to ensure your comfort, you will not be booked with people you do not know.
As an added bonus, you still receive all of the respiratory benefits of halotherapy as well. For those unfamiliar with the respiratory benefits, in short, inhaling fine salt particles draws out allergens and other irritants to clear your airways and help improve a number of respiratory conditions.
This service is intended to manage symptoms and compliment care prescribed from your doctor and is not a cure for these conditions. It is recommended that you avoid using red light therapy until a flare up subsides. For the best results you should book multiple sessions, but no more than 2-3 per week. Consult your doctor to discuss whether this service is right for you.
Halo Dual Skin Therapy includes both therapies working simultaneously over the 20-minute service, with 20 minutes of Halotherapy and 15 minutes of Red Light Therapy. Each session is $45 per person.
The exclusive Membership Keyholder Preview for Halo Dual Skin Therapy begins Tuesday, March 17. This therapy will become available to everyone on Wednesday, April 1.
As of April 1, 2026, members can substitute any of your complimentary Halotherapy sessions with Halo Dual Skin Therapy each month.
For more information on what other perks you get for signing up for one of our Membership Keys, scroll to the Membership section below.
Call or Test 617-262-2220 to book now.
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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.
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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.
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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 Key, is 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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