Marin County's only spa with an integrated formulation lab
Visibleresults.Refined renewal.
Clinical treatments developed in our Corte Madera lab. Every product applied to your skin is proprietary. Formulated, tested, and refined in the studio where you're treated.
Marin County's only spa with an integrated formulation lab
Every formulation we apply in treatment, send home with you, and use to clean the studio. Nothing about the products you touch is single-use.
Every serum, cleanser, and booster developed on our own treatment tables with our own clients. Not sourced, not rebranded.
The entire studio (treatments, lab, and systems) runs on 100% renewable electricity through Marin Clean Energy.
Skin + Face
The Resonance Skin Method.
A precisely structured facial menu. Each Foundational Treatment is defined by its protocol and result. Add enhancements to sharpen your outcome. Every product applied is an INBAR+co formulation, developed in our on-site lab.
Foundational Treatments
Foundational 30Hydratech · deep-cleared + hydrated · $150 Foundational 60Glow or Lift · your choice · $198 Foundational 90Glow + Lift · both · $298Enhancements - add to any facial
Targeted Technologies+30min · from $100 Clinical InfusionsBiotech boosters · $98 Precision PeelsLab formulated professional formulas · $45Body
Therapeutic Bodywork.
Outcome-led massage, lymphatic drainage, cupping, and clinical pain therapy. Fully customised every session, with a foundation of modalities that go well beyond standard spa massage.
Prenatal + Postnatal · Marin County
You carry everything. Let us carry you.
Evidence-based bodywork using positioning and pressure protocols safe and effective at every stage. All products pregnancy-safe and fragrance-free, formulated in our on-site lab. A high-value offering for the Marin family community.
I've tried three different prenatal massage therapists since moving to Marin. Resonance was the first where I left feeling genuinely better rather than just relaxed.
Restore
The only way to truly restore.
Treatments for nervous system downregulation. Sound therapy, infrared heat, acutonics, and warm infused oils. The Third Eye Bath is the focus of every full Restore session. Available as a focused 60-minute session or a deep 120-minute ritual.
60 Minutes · $198
Restore 60Sound · Infrared · Third Eye BathDeep Rituals · 120 min · $398
Lymphatic + Restore RitualLymphatic drainage · Third Eye Bath · Sound · Infrared Reflexology + Restore RitualCupping · reflexology · Third Eye Bath · Sound · InfraredExpress · 30 min · $150
The DecompressorGliding cups Ground + ResetReflexology Lymphatic Flow 30LymphaticEditorial · Atmospheric · Process
The Lab · inbar-co.care
The only spain Marin withits own lab.
Every serum, cleanser, and booster used in your treatment is developed in our on-site formulation lab. Not sourced. Not rebranded. Developed and refined over five years on our own treatment tables, with our own clients.
Responsible Chemistry
Biotech actives, green chemistry, zero plastic. Every formulation designed without synthetic fillers.
Material Integrity
Every ingredient is chosen for what it does, not what it costs or how it reads on a label. Nothing without a clinical reason to be there.
The Living Formulation System
Formulations evolve as science advances. No waiting for a manufacturer's product cycle.
Our Commitment
Not a claim. A practice.
In an industry that quietly depends on single-use plastic and synthetic chemistry, we made a different choice. These are the specifics.
Full sustainability approach →Renewable Energy
MCE Deep Green certified. The entire studio (treatments, lab, and systems) runs on 100% renewable electricity through Marin Clean Energy.
Plastic in our products
Every INBAR+co formulation used in treatment and available to purchase is completely plastic-free. Packaging designed for a second life, not a landfill.
Cleaning & Amenities
We formulate our own cleaning supplies and amenities in the lab, so we know exactly what touches your body and leaves our facility.
What clients say
From the Marin community.
I moved from the Mission for the schools and finding Resonance was like finding a spa that had also levelled up. The RF microneedling results at six weeks were remarkable.
The products they use in my facial are the same ones I can take home. Not an upsell, the logical next step. My skin has genuinely changed over four months.
I've come here through both my pregnancies. Knowing the products are plastic-free and formulated on-site matters to me. The prenatal therapist is one of the best I've found anywhere.
The Journal
Read before you book.
Clinical Facials · Marin County
What to expect from your first chemical peelin Marin
What happens to your skin in the 48 hours after a peel, and why understanding the downtime is worth it before you book.
Read article →Prenatal · Safety
Is prenatal massage safein the first trimester?
The clinical evidence on timing, pressure, and positioning.
Read →The Lab · Ingredients
Why we formulate our ownproducts
On ingredient transparency and what it means to test a formula on a treatment table.
Read →Find us
Corte Madera. Marin County.
Corte Madera, CA 94925
10am – 6pm · By appointment
Google Maps embed or exterior photo
26 Tamalpais Dr
Corte Madera, CA 94925