Vitamin A normalises the keratinisation processes of the skin. Skin which has a tendency towards being scaly and coarse becomes soft and smooth. Avoiding hyper keratinization, it inhibits acne. As it promotes cellular metabolism, vitamin A is an active agent for the treatment of aged skin. Retinol pre- treatment inhibits and preserves dermis against photo-ageing, it also avoids UV-inducted wrinkles. Vitamin A thickens the epidermis and improves its natural function as a barrier.
Vitamin E is not only effective as an antioxidant but also improves the moisturising capacity of the upper layer of the skin, reduces small wrinkles and lines and also has an anti-inflammatory effect. Vitamin E reduces the amount of the UV damaged cells (sun burn cells), it prevents lipid peroxidation and the premature skin ageing caused by UV-radiation. After exposition to UVB, Vitamin E can decrease thickening of the dermis and its desquamation. It also improves the water retention: the skin surface relief looks better and the amplitude of the wrinkles looks lower. Improving the cutaneous microcirculation, the skin surface relief is increased as well as the epithelisation of surface wounds and the enzyme activity in the skin. Improvement of the local microcirculation in hair bulb increases hair growth.
Vitamin “F”, the unsaturated fatty acids, has proven itself in the treatment of scaly and irritated skin. Linoleic acid is used as an emollient and thickening agent in cosmetics. There is some research showing it to be effective in cell regulation and skin-barrier repair, as well as an antioxidant and an anti- inflammatory. Fatty acids are natural moisturizing factors. Moreover, vitamin “F” plays a role in the health and shine of hair.