My mother in law gave me a bottle of shampoo that expired 17 years ago : r/mildlyinteresting
I didn't know shampoo expired!? Can you guys look at this and tell me if these expired? I bought 1 of them today : r/SkincareAddiction
ELI5: Why do common household items (shampoo, toothpaste, medicine, etc.) have expiration dates and what happens once the expiration date passes? : r/explainlikeimfive
Since when does shampoo have an expiration date? : r/AskReddit
I think I've found it, the worst expiration date ever. : r/CrappyDesign
What Causes Mold to Grow in Skin-Care Products | Allure
The Ordinary PAO, Period After Opening, Expiry Date & Shelf Life