GeneXC Serum occasionally contains small floating particles, which result from the product being shaken up during shipments. A slight foam develops that later settles into the product. The efficacy of the product is not affected and remains at optimum levels. Slight clarity and color differences may be noted among different batches of iS Clinical products, as many ingredients in iS Clinical products are botanically sourced. There are color variances in botanicals dependent upon season, harvest time, and crop, which will also be expressed in the product containing these ingredients.