Be wary of outdated product.  I have purchased outdated product samples which arrived in the mostly blue packets.  The seller's photo showed the current look of the product (mostly white).  You can call Kinerase with the product code prior to purchasing them.  You should ask the seller for the code.  According to Kinerase, the code is either outdated or produced overseas and is untraceable and possibly lower quality.  Be careful.  I posted this after seeing dozens and dozens of people purchasing these samples and unknowingly getting outdated product.