Thanks for the reply. However, the explanation given is not convincing and I am not going to take the risk to apply these plasters on open wound.
As indicated in my earlier messages, I have bought similar item (exactly the same item I bought from you) from Watson after I did not hear from you. There are no brown spots found on the pad. Are you suggesting that these 3M product that I bought from Watson does not contain the active ingredient that your mentioned?
Sorry, I am not trying to be difficult. The explanation aren't convincing. Since the one that you sent over to me and the one that I bought from Watson is different (one with brown spots and one without). To really know, which is the norm, I suggest, we should meet up in one of the shopping mall with Watson, Guardian and/or Unity that sell this product, buy one and open up to see if it consists of this active ingredient .
Alternatively, you can take back all the 12 boxes (including the 3 plasters that I have took out but not use) and do a refund.