The hub for everyone who wants to go deeper than the product — into the science, the philosophy, and the people doing this with you.
50K+
Members
8
Forum Categories
12+
AMA Sessions Hosted
40+
Countries Represented
The Forum
Eight spaces for every part of the biome hacker journey — from your first question to deep dives on performance and rituals.
Oral microbiome basics, breath, gum health, the ritual itself.
The oral-gut axis, digestion, and whole-body microbiome talk.
Gut-brain connection, mood, clarity, and mental energy.
Energy, athletic performance, and biome-driven vitality.
Confidence, closeness, and what a living mouth means for connection.
Morning routines, stacking habits, and making the 60 seconds stick.
Pump vs spray, subscriptions, ingredients — ask the community.
New here? Say hello and meet other biome hackers.
From William & the Team
Curated updates, research notes, and behind-the-scenes from the people building Rainbow Smile.
3 Days Ago
“Just got back from the lab — new oxygen retention data on the Minty Fusion batch. Sharing the full breakdown in the Mouth forum this week.”
1 Week Ago
“A reader asked why structured water matters more than ‘regular’ hydration. Wrote a plain-language explainer — link in the Gut category.”
2 Weeks Ago
“Update from Kenya — 400 more bottles distributed through Springboard Connectivity this month. Thank you to every subscriber making this possible.”
Live Sessions
Monthly AMAs with Dr. Vanita K. Gupta, William Robertson, and guest experts in microbiome science. Live, recorded, and archived for the community.
Chief Science Officer, Rainbow Smile
“The Oral-Gut-Brain Axis: What 2 Years of Research Taught Us” — live Q&A, open to all members.
Education
Select a blog in the Theme Editor to display articles here.
