A small amount of blue dye is placed into Hydra-Cool Serum to help make the color more uniform. Prior to this, many questions were received about the color variation occurring in this product. This was due to normal botanical variations, but because of the number of questions that were received, it was decided to include a very small amount of blue dye in the product. Now, although questions are sometimes received about the blue ingredient, there are many fewer issues overall. Due to the small amount of blue in the product and the many beneficial ingredients it contains, it is not problematic.