Cosmetic composition comprising an essential oil of Immortelle and an extract of Origanum

A cosmetic composition comprising the following plant extracts:

• an essential oil of Immortelle, which is the product of hydrodistillation of the flowers or flowering heads of Helichrysum italicum, in an amount from 0.001 to 0.1 wt % relative to the total weight of the composition,
• a terpene extract, which is obtained by extraction with a protic polar solvent of the aerial parts of Origanum majorana selected from the stem, the leaves and mixtures thereof, wherein the solvent is selected from the group consisting of water, a monoalcohol, a glycol, a polyol and mixtures thereof, in an amount of from 0.001 to 5 wt % relative to the total weight of the composition, and
• a physiologically acceptable medium comprising an aqueous phase comprising water and a polyol,
• wherein the combination of said plant extracts synergistically activates the expression of the genes involved in the defense of the skin against oxidation phenomena, and of the genes involved in the regulation of epidermal differentiation.