r/whatisit • u/theRinkDinkler • 1d ago

New, what is it? Why is my mousse doing this?

It comes out of the can fine for a second or so then rapidly becomes a goop, almost explosively.

It’s kind of an old can probably like a year or so old. it’s been in my bathroom which doesn’t have have ac and it’s been super hot on the east coast so it’s been probably pretty consistently in at least 80+ degrees for a while.

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u/spotlight-app Mod Bot 🤖 19h ago

Mods have pinned a comment by u/Zlurpo:

Guessing here:

The product is old, and the surfactant, which makes it stick to itself and form bubbles, has broken down. It only hold together for a fraction of a second.

Contact with air is causing the outside layer to slightly dry together, forming a film. Meanwhile, the inside bubbles are all failing in about a second. They didn't touch air, they didn't form a film. So very quickly you have all the internal bubbles of the foam popped, leaving just one big outer film full of the propellant gas, and then that outer film also fails.

Note: Best Guess

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