According to the Clinical Centre of Nis, certain plant extracts may have the ability to scavenge free radicals, to protect the skin matrix through the inhibition of enzymatic degradation, or to promote collagen synthesis in the skin, affect skin elasticity and tightness(1).
Other suggested that free radicals induced domino effects in production of reactive oxygen species, can react with DNA, proteins, and fatty acids, causing oxidative damage and impairment of antioxidant system, leading injuries damage regulation pathways of skin, including wrinkles, roughness, appearance of fine lines, lack of elasticity, and de- or hyperpigmentation marks(2).
Vitamin E, a fat soluble vitamin, consisting eight different variants (alpha-, beta-, gamma-, and delta-tocopherol and alpha-, beta-, gamma-, and delta-tocotrienol) with varying levels of biological activity, found abundantly in corn oil, soybean oil, margarine, wheat germ oil, sunflower,safflower oils, etc. plays an important role in neurological functions and inhibition of platelet aggregation, regulation of enzymatic activity, free radical scavenger, etc..
According to the Universiti Kebangsaan Malaysia, in stress-induced premature senescence (SIPS) model of human diploid fibroblasts (HDFs), γ-tocotrienol (GTT), a vitamin E variant showed to delay cellular senescence of human diploid fibroblasts through the inhibition of intrinsic mitochondria-mediated pathway which involved the regulation of pro- and anti-apoptotic genes and proteins(3) and prevented cellular aging in human diploid fibroblasts(4), probably through modulating gene expression(5) and protected against oxidative stress-induced cellular ageing by modulating the telomere length possibly via telomerase(6).
Taken altogether, composition of vitamin E and other antioxidants and its variants may be effective
in reduced early onset of skin aging and inhibited skin aging progression, but large sample size and multi centers studies to improve these validation are necessary.
Over doses of vitamin E supplement can cause symptoms of blurred vision, weakness, dizziness, nausea, diarrhea, etc., please make sure you follow the guideline of the Institute of Medicine of the National Academies.
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(1) Skin ageing: natural weapons and strategies by Binic I1, Lazarevic V, Ljubenovic M, Mojsa J, Sokolovic D.(PubMed)
(2) Phytoconstituents as photoprotective novel cosmetic formulations by Saraf S1, Kaur CD.(PubMed)
(4) Gamma-tocotrienol modulation of senescence-associated gene expression prevents cellular aging in human diploid fibroblasts by Makpol S1, Zainuddin A, Chua KH, Yusof YA, Ngah WZ.(PubMed)
(5) Gamma-tocotrienol modulated gene expression in senescent human diploid fibroblasts as revealed by microarray analysis by Makpol S1, Zainuddin A, Chua KH, Mohd Yusof YA, Ngah WZ.(PubMed)
(6) Gamma-Tocotrienol prevents oxidative stress-induced telomere shortening in human fibroblasts derived from different aged individuals by Makpol S1, Abidin AZ, Sairin K, Mazlan M, Top GM, Ngah WZ.(PubMed)
(7) Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction by Makpol S1, Azura Jam F, Anum Mohd Yusof Y, Zurinah Wan Ngah W.(PubMed)
(8) Alpha-tocopherol modulates hydrogen peroxide-induced DNA damage and telomere shortening of human skin fibroblasts derived from differently aged individuals by Makpol S1, Zainuddin A, Rahim NA, Yusof YA, Ngah WZ.(PubMed)
(9) A pilot study of the photoprotective effect of almond phytochemicals in a 3D human skin equivalent by Evans-Johnson JA1, Garlick JA, Johnson EJ, Wang XD, Oliver Chen CY.(PubMed)
(10) Main approaches for delivering antioxidant vitamins through the skinto prevent skin ageing by Gašperlin M1, Gosenca M(PubMed)
(11) The role of phytonutrients in skin health by Evans JA1, Johnson EJ.(PubMed)
(12) The effects of a daily facial lotion containing vitamins B3 and E and provitamin B5 on the facial skin of Indian women: a randomized, double-blind trial by Jerajani HR1, Mizoguchi H, Li J, Whittenbarger DJ, Marmor MJ.(PubMed)