What does the little container with the lid open that reads 24m on my shampoo bottle stand for?

That is the shelf life and it means your product is good for 24 months after you open it.What does the little container with the lid open that reads 24m on my shampoo bottle stand for?
that it is a 24 Molar solution?What does the little container with the lid open that reads 24m on my shampoo bottle stand for?
whats a 24 molar solution?
After you open it, it will work for 24 months then stop working.