The body's primary fat-soluble antioxidant, embedded directly in cell membranes to protect them from oxidative damage — and vitamin C's regenerating partner.
Vitamin E is a family of eight fat-soluble compounds (four tocopherols and four tocotrienols), with alpha-tocopherol being the form most active in the human body. Found in nuts, seeds, vegetable oils and leafy greens, vitamin E's defining role is protecting cell membranes — because it's fat-soluble, it embeds directly within the lipid bilayer of every cell, positioned exactly where oxidative damage to membrane fats (lipid peroxidation) actually occurs.
Cell membranes are rich in polyunsaturated fatty acids, which are especially vulnerable to oxidative damage from free radicals — a process called lipid peroxidation that can compromise membrane integrity and contribute to cellular aging and dysfunction. Vitamin E interrupts this chain reaction by neutralising free radicals before they can propagate further membrane damage, making it a frontline defence specifically for the fatty structures that water-soluble antioxidants like vitamin C cannot directly protect.
After vitamin E neutralises a free radical, it becomes oxidised itself and needs to be "recycled" back to its active form — a job largely performed by vitamin C. This is why the two are so frequently recommended together: vitamin C effectively regenerates spent vitamin E, extending the antioxidant protection of both well beyond what either provides alone, across both the watery and fatty compartments of the cell.
Vitamin E has long-standing research and traditional use (both topical and oral) for skin barrier support and protection against UV-induced oxidative damage, and low skin vitamin E levels have been observed with both aging and sun exposure.
Learn more about how Vitamin E (Tocopherols) supports these health areas