Resveratrol

is an exceptionally powerful antioxidant belonging to the polyphenol group. It protects cells, tissues and organs from the effects of free radicals, which cause premature cell ageing and impair cell health and function. This natural polyphenol occurs in the skins of red grapes, where the plant produces it as a defence against pathogens and UV radiation. It can also be extracted from Japanese knotweed roots or produced synthetically in laboratories for greater purity in cosmetics. Organic extracts are popular for their environmentally friendly origins and preserved synergy with other plant compounds, while the synthetic form ensures stability in formulations.

Its mechanism of action involves powerful antioxidant activity that neutralises free radicals and protects cells from oxidative stress. It strengthens the skin's immune system by activating longevity genes known as sirtuins, thereby slowing ageing. It protects against harmful environmental influences, particularly damage caused by UV radiation, which contributes to skin ageing and pigmentation. It helps stimulate mitochondria, which support cellular respiration, helps slow premature cell ageing and has a rejuvenating effect on the skin. By restoring collagen fibres, it improves the skin's elasticity, smoothness and appearance. It supports the skin's defences and vitality and has anti-inflammatory, antibacterial and antifungal effects. It firms and smooths the skin, improves its elasticity and regenerates collagen fibres. The recommended concentration in cosmetics is 0,5 to 2 per cent for optimal effectiveness without irritation.

Ideal for mature skin showing the first signs of ageing, dry and dehydrated skin, sensitive skin prone to inflammation, and skin exposed to environmental stress, including photoageing. I recommend it for people with pigmentation spots, those with acne-prone skin thanks to its antibacterial properties, and anyone looking to prevent wrinkles and loss of elasticity. It is also suitable for men to soothe and regenerate the skin after shaving.

A study published in the Journal of Cosmetic Dermatology (2014) showed that resveratrol at a concentration of 0,5 %, applied topically for 8 weeks, reduced wrinkles by 12 % and increased collagen expression by 20 % in women with photoaged skin. Further research in the International Journal of Molecular Sciences (2018) showed that resveratrol at a concentration of 1 % inhibits melanogenesis by 45 % in vitro, reducing hyperpigmentation caused by UVB radiation.