Each food colouring pen comes with a different tip size on each end: the thinner tip is ideal to write messages, drawing small details or adding lines on the top of your baked cookies to use as a guide before decorating them with royal icing. the thicker tip is perfect for filling in large areas of colour quickly. Vegan-Friendly Usage: Shake the markers before using them. The first time you are using each pen, press slightly the tips on a paper towel to allow the food colouring to flow into the tip. For best results, always use your food colouring pens on a hard edible decorating surface such as fondant or fully dried royal icing. Note: Product images are provided for visual reference only. Actual Product colours and finish may look different than what is pictured. Ingredients: Water, FD&C Blue 1 (E133), FD&C Red 3 (E127), FD&C Red 40 (E129), FD&C Yellow 5 (E102), FD&C Yellow 6 (E110), Citric Acid, Sodium Benzoate (Preservative)