About us
Built for women who
were tired of being lied to.
Mary Kate started with a simple question: why do so many women take vitamins every day and never feel a difference?
Kate Mercer
Kate had been taking hair vitamins for two years. Gummies, capsules, powders — she tried them all. She was doing everything right, and nothing was working.
A biology degree and a background in nutrition product development meant Kate knew exactly what she was looking at when she read supplement labels. And what she saw frustrated her.
"Most of these products are 90% filler. The active ingredients are underdosed, the absorption is poor, and women are paying a premium for capsules that barely work."
So she built something better.
B.S. Biology · 8 years supplement formulation
Pills don't work the way you think they do.
The supplement industry has a dirty secret. Most vitamins in pill or gummy form are only partially absorbed by your body. The rest passes straight through you. You're not getting what you paid for.
Liquid vitamins change that. Because they don't have to break down first, the nutrients reach your bloodstream faster and more completely. The difference is measurable — and for hair loss, energy, and skin, that difference actually matters.
Kate spent 18 months working with a team of formulators to develop a liquid multivitamin that combined Lustriva® — the only clinically proven hair growth ingredient of its kind — with a full spectrum of essential vitamins, all in a formula clean enough to meet the strictest third-party certification standards.
The result was Mary Kate. Named simply after the woman who built it.