Inkcups’ silicone ink for pad printing and screen printing is the best option for decorating silicone products. Adhesion is difficult for silicone products which is why the SI ink series and the SI-HD silicone ink series were developed. Silicone is used in many non-stick and medical applications as it is easy to clean. Therefore, finding a silicone ink to stick is also difficult. Many times, a product may be labeled as silicone however, it is in fact, not silicone. To learn how to identify true silicone, watch the video: Silicone Printing: How to Test if your Product is Actually Silicone.