Due to the increasing number of skin care products which provide antioxidant function, and because "antioxidant" increasingly refers to any substance which potentially prevents any degree of damage from reactive oxygen species, the listing of antioxidant skin care products now distinguishes between primary antioxidants for various skin types and conditions, and all antioxidants by brand.
Skin care featuring primary antioxidants are those which provide the key phytochemicals (carotenoids, tocopherols, vitamin c among others) which are key among the body's native defense systems and have a very clear antioxidant function and high potency.
Products containing beneficial antioxidants which are not as important as those designated as being primary are listed as part of the complete summary.
The change reflects our background in molecular and cellular biology — primary antioxidants have clearly established and irreplaceable benefits. See Idebenone — Prevage and Priori vs C E Ferulic for a perfect illustration of this reality.
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