We were a laboratory before we were a brand.
It began in 2016, with a question that turned into a science, and a science that turned into skincare.
Where it began
We did not set out to make skincare.
We set out to find answers.
The same year, two very different things happened in our family. A loved one was diagnosed with Parkinson's. A teenager was struggling with mild acne. Different questions, but the same instinct. We began reading about how cells work, and about the environment that surrounds them. We did not have a word for it yet. It was epigenetics.
We discovered how profoundly a cell’s environment can influence the way it behaves.
We built skincare on that understanding.
A laboratory first
So we built a research team, not a marketing plan.
We are Tule Park and Didier Magne, and we are not chemists by training. So we brought together people who were. Molecular biologists, dermatologists, green chemists, and ethnobotanists, working from the science of epigenetics, the study of how environment shape the way we age.
We spent five years researching and testing before we sold anything. Our first product launched in 2021, a solution for blemish-prone skin that paired a supplement with skincare, because skin is connected to the rest of the body, and we wanted to treat it that way.
Why we test
Hormone safety was never a marketing decision.
We knew our first product would be used primarily by women and teenagers, during life stages marked by significant hormonal changes - from puberty and monthly cycles to menopause. Our research into endocrine disruptors made one thing clear to us: adding another potential source of hormonal disruption did not make sense. So we made hormone safety non-negotiable.
Skin Diligent is the first skincare in the world to systematically test for hormone disruption. Every finished formula is tested free of estrogenic and androgenic endocrine disruption. The whole formula, not individual ingredients.
our Promise
You should not have to choose between science-backed efficacy and safety.
We believe the two belong together. We will continue to follow advances in skin biology, question established assumptions when the science gives us reason to, and apply what we learn to create effective formulations without compromising the standards we set for safety.
We may not always have every answer. Science doesn’t either. But as our understanding of skin and aging evolves, so will Skin Diligent.
Cruelty free · No parabens · No phenoxyethanol · 97%+ natural origin · Made in France · Formulated by a team of researchers · Formulated to European standards · Tested free of estrogenic and androgenic endocrine disruption