I am the owner of the original book of Sieur Solleysel, who was the first squire of Louis IVX. This book written in Old French contains recipes for the care of horses. You will find some extracts on our site: https://www.ek1n.fr/pages/recettes-ancestrales-2/
For the formulation of certain products, we were inspired by certain recipes, which we reformulated with scientific knowledge today.
We formulate and produce in green chemistry, you will find an explanation here: https://www.ek1n.fr/pages/pourquoi-choisir-ekin/
And our products are 100% natural and biodegradable.