Hi Ladies,
I learned the hard way what an outdated relaxer can due to your hair!
I lost most of my hair years ago when I purchased a relaxer at a BBS store- I thought I was getting such a good deal bc it was on sale. When I went to rinse it out along went most ofmy hair down the drain!!
I learned that you can phone the company, most provide an 800 # on the container, or phone 1-800-555-1212 (800's version of 411 for any 800 #). Once you reach the company, you can ask what the code is that they use to identify the date of expiration. When you learn that then you never have to guess again. You'll be able to pick up any product from their line and tell the expiration and manufacture date- while still in the store, before you buy it.
These codes are designed to be cryptic (which I think is stupid). They are usually lightly printed in purple ink on the outside or bottom of the container. So, what may look like some nonsenical printing on the container is actually a code for the batch, date of manufacture, and expiration.
Hope this helps!