Environmental Protection Factor (EPF) is a scientific standard of measuring the power of antioxidants and judging a product’s antioxidant performance.
Put simply, it's like an SPF, but instead of accessing how much protection you'll get from the sun, it's talking about how much protection you'll get against environmental aggressors such as stress, pollution and smoking—all of which accelerate the ageing process. A product's EPF accesses how much power you'll get from the antioxidants that work to protect you from these environmental aggressors.
So how does it work? Well it objectively evaluates the power of an antioxidant on a 100-point rating scale. Top anti-ageing antioxidants include vitamin E, vitamin C and standard Co-Enzyme Q10, but it's idebenone that is the most powerful antioxidant with an EPF of 95. You can find idebenone in Priori Even Tones ($220) and the Prevage® product range which is getting a bit of a makeover from March 7, combining idebenone with ester to further improve its effectiveness.
Stockists: Prevage® (1800 015 500), Priori (1800 808 993).