hi,
i do not see any difficulties here at all. i thought we have already discussed this at least once. even more. Once again. Please let`s try to use a simple logic.
Oil is a natural product. We use grape-seed oil. There are grape varieties of different colors, wine grapes, white grapes, etc. Color of seeds is also different. Its simple as 2x2=4. Color is not an indicator at all. It only means that in those 2 vials was used oil from different barrels and even from different suppliers probably, we have agreements with several oil suppliers, i mentioned this for sure.
Next, I think most people just don`t understand how a big massive batch production works. Batch number is associated with raws batch. One batch number does not mean that all vials are produced within one day. We produce products with same batch within months. We sell products with same batch within years. You just don`t quite understand what is the scale of our production. Why shall we use another batch if we still use raws from the same batch. Also vials with same batch can have a different expiration date - like here for example -
This is the vial from the last mixing of this batch. Now we use another coding system and right now produce a new batch, which looks like here
But vials with the old batch will be on the market within next 4-6 month or even longer for sure.
For you important is exp.date, batch info is mostly for internal control in case of any possible issues.
Next, labels are always stuck by a mashine of course. No one person will be able to stick hundreds of thousands of vials manually and evenly. Moreover, this is done immediately after a vial is filled. Boxes is another step which is done at another day. There is no way label from prop or anything else could appear on a vial with sust, this is physically impossible. Finally you can just test it. It will be seen even on a blood work. Prop will not create any peak if you take blood after 48 hours.