Do hair products like Shampoo and Conditioner expire?

If you have shampoo /cond unopened for a while, like a few months - does it expire?Do hair products like Shampoo and Conditioner expire?
Sure it can...





I once found Shampoo in a salon I knew was discontinued 10 years ago that smelled like sour milk...Why the salon was still selling it I don't know.





Most Manufacturers put their products through a process called stabilization that determines what causes breakdowns (or expiring of the shampoo).





So while shampoo and conditioner don't necessarily Expire, they do over time (depending on where it is stored... IE... in the sun, or if it's been frozen) break down and can lose effectiveness.





Typically you can tell when this happens, Manufacturers call for a package redesign, utilized to liquidate old stock , and bring to market new batches of fresher product.


Or in my example it was smelly and discolored.





So if you are using old packaging of a product it may have brokendown ( or Expired).





Hope that helps...





In your case of '; a few months'; I tend to dought it...Do hair products like Shampoo and Conditioner expire?
I think no
no expiration date. (unless there's one on the bottle) that stuff is good for a life time.
~A few months is fine, but after years, they do expire. They get thick, sticky and stinky.~
No, I don't think so, not unless maybe you have it for years, but I am thinking most people don't last more than a month so it;s fine.
lol no silley
it wont expire if it hasnt been opened for a few months, but once you open it it is more likely to expire, although it takes a very long time. it depends on the brand youre using, but you can usually see a discoloration and change in texture when it starts to expire. but its not bad for you or dangerous or anything when it starts to expire, its just that the chemicals used to make it start to break down. hair products, like hair sprays and gels, take a much longer time to expire than shampoo ad conditioner, which themselves take a long time to expire. most people use up their bottles way before they even have a chance to start breaking down.