Does eco-friendly shampoo have a short shelf life?

Grist
By Ask Umbra®Oct 29, 2015, 6:00 am27 pts
Q. Dear Umbra, A lot of the body care products we use (or should be using) have natural ingredients and presumably few preservatives. Doesn’t this automatically give them a short shelf life before they become yummy petri dishes for bacteria and fungi? I can make, for example, a bottle of shampoo last for…

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