About Root Theory

Root Theory started because everything for thinning hair felt like a trade-off — greasy “miracle” oils that did nothing, or drugs with side effects you had to Google. We wanted something in between: clean, simple, and built on real research.

We make a once-a-day serum for guys who care where their hair is headed — whether it’s already thinning, just starting to change, or you just want it as thick and healthy as possible. One bottle, one step, designed to quietly push back on thinning and keep your hair looking fuller over time.

We built the product we wished existed when we first noticed our own hair changing — something you can feel good about using every day, and even better seeing in the mirror a few months from now.

If you’d like to get in touch with us, you can reach us at hello@roottheorylabs.com