The invention relates to a composition containing in a soluble form and in an aqueous phase: - proteins: 0.40% to 0.45%； - calcium: 0.50% to 0.51%； -the following mineral salts: sodium, potassium, magnesium, phosphorus, sulphur； - the following trace elements: selenium, manganese, iron, zinc, copper； - acetic acid: 4.70%. The invention also relates to a method for obtaining the composition that comprises placing raw poultry eggs with their shells in a tank containing diluted acetic acid and sodium chloride for one month so that the composition contains the solubilised forms of the compounds naturally occurring in the shell of a poultry egg. The composition of the invention can be used for preparing a drug or a cosmetic product for treating skin or scalp alopecia.
