invention can be described more in detail as follows ethyllinoleate and triethylcitrate synergically are able to reduce seborrhoea and hyper keratinisation of the pilosebaceous duct this action is achieved through the release of the respective acid forms through hydrolysis of the esters by the action of the lipase bacteria in this invention it has been proven that hydrolysis of ethyllinoleate and triethylcitrate carried out by lipase bacteria is to be preferred to hydrolysis of the triglycerides lipid component of sebum carried out by the same lipase bacteria consequently avoiding an irritative condition due to the release of fatty acids achieved through hydrolysis of the triglycerides in relation to hyper keratinisation of the pilosebaceous duct the combined action of ethyllinoleate and triethylcitrate is innovative in that the former prevents hyper keratinisation whereas the latter cures it behaving as a keratolytic this combined action results in higher efficacy compared with the effect of the two components taken individually in relation to seborrhoea the combined action of ethyllinoleate and triethylcitrate is innovative in that it results in a decrease in the sebum levels achieved by inhibiting the 5 alpha reductase enzyme an enzyme which as stated above is the cause of the reduction of testosterone to dihydrotestosterone whose action is capable of increasing the production of sebum once ethyllinoleate is hydrolysed into linoleic acid it is able to inhibit the activity of 5 alpha reductase by a direct mechanism whereas triethylcitrate once hydrolysed into citric acid acts in an indirect way creating an environment where the activity of the aforementioned enzyme is obstructed in other.