ProGel® Purple Ingredients: Glycerine Silicone Dioxide Propylene Glycol Colours E1222 and E133 Each gel comes in a colour co -ordinated and clean-to-use plastic tube and contains a tamper evident seal under the screw top. Simply peel away and squeeze the gel out of the tube. No more messy containers making your tool box full of colour spots and no more wasted time trying to identify a specific colour as the printed tube makes this a thing of the past! Nut Free GM Free Gluten Free Suitable for Vegetarians Certified Kosher Suitable for Halal Diets