Yes, hairspray can go bad, although it doesn't spoil in the same way food does. While it won't become rancid or harmful, its effectiveness and even its scent can change over time.
Shelf Life and Expiration
- Unopened: Many hairsprays have a shelf life of up to two years if unopened. [Source 1]
- Opened: Once opened, the countdown begins. The exact timeframe varies, but generally, expect a noticeable decline in quality after a year. [Source 2] Some sources suggest they can still be used for longer, but the results might not be the same. [Source 2]
Signs of Spoilage
Hairspray doesn't "go bad" in the traditional sense, but it can degrade. Look for these signs:
- Change in Scent: An unusual or off-putting odor indicates oxidation, which alters the product's properties and may affect its safety. [Source 6]
- Altered Consistency: Changes in thickness or texture (becoming too thick or too thin) may signify degradation.
- Ineffectiveness: If the hairspray no longer holds your hair as well as it once did, it might be past its prime.
How Long is Too Long?
While some users report continued success with hairspray beyond the suggested timeframe, it's best to prioritize freshness for optimal performance and potential safety. Using extremely old hairspray might not offer the desired hold or may even have an altered chemical composition. [Source 6] Remember that manufacturers provide expiration dates or shelf life suggestions for a reason. [Source 5]
Bottom Line
Hairspray, like many other beauty products, has a limited shelf life. While it won't become inherently dangerous, its quality and effectiveness will diminish over time, particularly after opening. Discard hairspray that shows signs of spoilage or is significantly past its recommended usage period.
