bi·​o·nas·​say | \ˈbē-ˈoh-na-ˈse

1 : We borrowed the name from one of the most subtle and attractive peaks of the Mont Blanc massif: Bionnassay

2 : A play on words combining biology (the scientific study of life) and assay (to analyze and determine characteristics of substances)


Our philosophy is rooted in responsibility, nature's brilliance, and simple solutions. Our honest approach to simple formulas allows us to honor our values while providing top quality nature-inspired products for your skin. With simplicity at its core, our products are designed to fit seamlessly into any routine.


A note from the creators

Bionassay inspires us.

It is the nostalgia of hiking in the vast daring Alpine environment for one, and swimming in the deep blue waters of the Caribbean for the other. 

Bionassay's scents, ingredients, textures and story represent a vault of souvenirs from our past, carrying our tales and memories.We'd like to invite you on a retreat of sumptuous uncomplicated care. 

Unleash the power of your skin through curated skincare essentials that are for every skin.

Welcome to our Bionassay universe,

- Pao & Seb





A reflection of our health, the skin is our protective veil with an ability to heal itself. We want to understand how the skin behaves and what factors affect its functions.

Our skincare essentials are curated with lab-crafted ingredients and botanical essences that nourish your skin’s diverse needs in distinct moments.

You’ll find that our products are not labeled with conventional instructions, but rather we believe in the power of listening to your skin. We believe that skincare should be an inspiring journey of discovering the beauty and complexity of your skin’s intuition.

Our ingredients are sourced without engaging in mass or wild harvesting. Additionally, 100% of our ingredients are traceable back to the source, to ensure fair working condition and the efficacy and stability of our formulas.

  • Look deep into nature, and then you will understand everything better.

    Albert Einstein