8. Hair Gel
Duration: two to three years
The average cost is $12.92.
Three years is when hair gel turns bad. Although certain brands can last up to five years, it’s generally recommended to discard hair gel after three years. Hair gel that has gone bad won’t give your hair a wet look or hold baby hairs in place. At worst, hair gel may result in a reaction on the scalp that ranges from irritation to infection.
©Roman Samborskyi/SShutterstock Hair Gel
It could lead to the growth of bacteria if you store your hair gel in a moist area (like the bathroom cabinet). One of the most prevalent indicators of a scalp reaction from old hair gel is itching.
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