Some of my raws are expiring soon and I wonder if I really need to throw them away or if I can use these a bit longer.
I still have ferulic acid left, it doesn't seem like it's oxidized. A while ago I had a batch from another supplier, that probably had oxidized, it had a slight pink colour and a pleasant, sweet flowery smell (definitely not an off-smell). But the batch that expires next month, is white and has no odour at all.
I also have a few grams of hyaluronic acid left (regular molecular weight), which also expires next month.
... and some Sepimax Zen (this month).
Please feel free to share any tips/information/suggestions you have.