A Clean Future Frequently asked Questions Home Frequently asked questions What is an additive? Why do we use additives? What is an E-number? Why do we call them E-number? Are E-numbers bad? What is a preservative? Why are there preservatives in foodstuffs? What is an emulsifier? Why do we use food colouring? What is a raising agent? What’s the difference between natural and artificial flavours? What are hydrogenated fats or oils? Is clean Label allergen-free? Are additives allergens”? Why Clean-Label? Our Definition & Position