That old bottle can lead to itching, infection, and even hair loss.
All beauty products expire.
But alas, beauty products have a shelf-life, and your shampoo andconditionerare not immune.
Look for an Expiration Date
Unopened shampoo should last about two to three years.
However, once opened, that timeframe depends on the “period after opening” date.
Even thebest shampooswill degrade in quality over time.
This refers to shelf-life after opening.
To tell if yours has expired, look for some visual clues.
“There are many things that can happen when a product expires,” says Petrillo.
“Many times the chemical components can separate, giving the product a clumpy, unnatural appearance.”
Expired shampoo isn’t effective, which can result in your hair looking dull and dirty.
In addition, because the preservatives have probably lost their potency, the product is no longer stable.
The shampoo’s chemical change can cause itching orirritation to your scalp.
Is it past its expiration date?
If so, just throw it out.
The jot down of conditioner (deep, leave-in, moisturizing) does not affect the shelf life either.
(The lack of synthetic preservatives might cause a shorter shelf-life.)
There is no scientific proof that using expired shampoo and conditioner directly causeshair loss.
