I was on the verge of a mini M. Asam splurge last on HSN, but forced myself to see what I had in reserve from the old days. I had A TON of sealed, unopened products. Six shoeboxes full. I opened a tube of cream Vinolift cleanser last night, and it was completely fine. I used it and again this morning, and nothing was off. Great cleanser, too.
The products in the boxes still have their seals, so they were never opened, and I'm sure that's helped. The real test will come when I try one of the moisturizers, but that can wait. The M. Asam products, even the cream cleansers, are rich in oils, so I'm pretty confident they're okay, too.
The boxes were in a closet off the bedroom, which is air conditioned a few days a year, if that. They date back about 8 years.