Shelf Life of Perfect-C™ (Ascorbyl Tetraisopalmitate)

The expiration date printed on the packaging of Perfect-C™, such as 06/2017, represents the manufacturer's guaranteed shelf life, which is typically 12 months from the production date. Products arriving at the company usually have about 6-8 months remaining on this guarantee.

However, the actual effective shelf life of Perfect-C™ is significantly longer, provided it is stored under appropriate conditions. Perfect-C™ (Ascorbyl Tetraisopalmitate) is an oil-soluble Vitamin C known for its high stability. When stored correctly, specifically in the refrigerator at 5°C and away from light, it maintains its effectiveness for at least 24 months, and potentially up to 3 years or more.

The cosmetic industry standard often considers ingredients like this usable for up to 2 years after being incorporated into a finished product, assuming the ingredient was in good condition prior to formulation.

Therefore, if your Perfect-C™ was stored properly (refrigerated and protected from light), it is likely still effective even after the stated 06/2017 date, due to its inherent stability and longer practical shelf life under optimal storage conditions.