Tag: Serum oxidation

An estimated 80% of skincare users are unaware that their vitamin C serum can degrade over time, losing its potency. Knowing how to tell if your vitamin C has oxidized is crucial for getting the maximum benefits from this powerful antioxidant. This guide breaks down the key indicators to help you determine if your product is still effective or if it's time to replace it.

According to dermatologists, ascorbic acid is notoriously unstable and breaks down rapidly when exposed to light, heat, and air. For many, refrigeration is the go-to solution, but if that isn't an option, knowing how to store vitamin C serum without a fridge is crucial for maintaining its potency and extending its shelf life.