Does shampoo have an expiration date?

Yes it does, it should usually be on the bottom or back of the bottle, if you do use it while out of date, it could damage your hair! It does not have an actual date on it but you will see on the label, usually at the back of the bottle, a little circular sign with the number 6, 12 or 24 in it. This is the length of time in months in which you should use the shampoo.