The ordinary products shelf life

[BinSid]

How long can ordinary products (serums)can last once opened?

I have niacinamide,  alpha arbutin and buffet sitting for about 2 years. Are they still ok to use?

[WinglessOne]

@BinSid  If the products were opened 2 years ago, check the labels for the little jar symbol. That should tell you the lifespan of an opened product. 

If you haven't opened the products yet: The Ordinary says most of their unopened products have a 3-year lifespan. You can always contact The Ordinary directly via their website to ask about your stash.