How does Sephora ensure that brands comply with the ‘Clean at Sephora’ definition?

Brands that want to qualify for the Clean at Sephora seal have to conduct a thorough audit of each and every one of their formulas and assure us that none of the ingredients on our ‘formulated without’ list are being used. It is important to note that there may be trace amounts of the ingredient present in the product. Additionally, they have to agree that none of their future formulas will contain any of these ingredients and have to demonstrate transparency in the form of a public-facing standard and point of view around formulation.