Method of cosmetic treatment to protect the skin from pollution and improve skin regeneration

A cosmetic treatment method for protecting skin epidermal cells from DNA damages induced by ozone exposure and UVB irradiation, comprising topically applying to skin in need thereof an effective amount of a cosmetic composition wherein the composition comprises 0.5 to 2% of an active ingredient consisting of a combination of a hydrolysed rice extract and a grapeseed extract in a ratio adjusted at 9:1 (w/w) and a physiologically acceptable medium, wherein the process to prepare the active ingredient comprises the following steps:

• a. obtaining hydrolysed rice extract by enzymatic hydrolysis with vegetal enzymes, said hydrolysed rice extract is consisting of low molecular weight peptides of molecular weight less than 6 kDa,
• b. purifying the hydrolysed rice extract using decreasing porosity filters;
• c. obtaining the grapeseed extract from grapeseed cake in water at a pH between 4 and 7,
• d. purifying the grapeseed extract using decreasing porosity filters;
• and
• e. combining the extracts obtained at step b and d in a weight ratio of 9:1
• f. adding 30% of glycerol in 70% of the product obtained at step e to prepare the active ingredient
• g. using the active ingredient obtained at step f to prepare a cosmetic composition comprising the active ingredient at a weight ratio of 0.5 to 2% of the cosmetic composition.