Setec Astronomy
Well-known member
- Aug 31, 2010
- 17,057
- 1,352
Because the products are in sealed containers, their ability to protect is assured.
Of course, that is relative. I remember someone complaining about their bottle of something breaking when they dropped it, and someone (Pockets from Poorboy's, Chris@Optimum, or someone) was telling us about the fact that for whatever reason (recyclability, reduced packaging material volume) the bottles are thinner and more permeable today then in the past. That means more solvent etc. diffusion out of the bottle, and more oxygen diffusion in.
I have unopened (with the neck seals intact) bottles of various products that have sucked in, so something is going on (I presume solvent diffusion out of the bottle, reducing the volume, thus creating negative pressure and collapsing the bottle).