Agent for promoting hair growth and method for preparing same

A method for preparing an agent for promoting hair growth, comprising:

• (1) washing, cutting in a predetermined size and drying eight medicinal herbs consisting of Rumex japonicas HOUTT, Pleuropterus multiflorus, Radix Notoginseng, safflower (Carthamus tinctorius L.), Cnidium officinale, Mentha Arvensis var. Piperascens, Asarum sieboldii, and Glycyrrhiza uralensis Fischer and then mixing the eight medicinal herbs at an optimal weight percentage to prepare a herbal medicine material for promoting hair growth;
• (2) adding the herbal medicine material together with 10 to 15 L of purified water in a 20-30 L herb medicine brewing pot and adjusting heat to perform a first decoction under pressure and temperature conditions of 2 kgf/cm2 and 80° C. to 90° C. for 2 to 3 hours;
• (3) letting the herb medicine brewing pot stand for about 2 to 3 hours after the first decoction until the pressure and temperature conditions in the herb medicine brewing pot become a zero point, heating up the herb medicine brewing pot again at 80° C. to 90° C. for 1 to 2 hours and then turning off the heat;
• (4) keeping the herb medicine brewing pot filled with the herbal medicine material for promoting hair growth at a low temperature of 7° C. to 8° C. for 12 hours to perform a cold ageing;
• (5) heating up the herb medicine brewing pot filled with the herbal medicine material for 2 to 3 hours to the pressure and temperature conditions of 2 kgf/cm2 and 80° C. to 90° C. and then maintaining the heat for a predetermined period of time;
• (6) obtaining an extract for promoting hair growth from the herbal medicine material contained in the herb medicine brewing pot through a 200-mesh filtration apparatus;
• (7) adding the extract for promoting hair growth in a simmering pot heated at 90° C. to 100° C. and sufficiently evaporating water while stirring with a spatula to prevent sticking on the pot;
• and
• (8) adding the water-removed extract for promoting hair growth in an evaporator, adjusting the concentration of the extract until the extract has a sticky texture, adding a purified horse fat and adjusting heat to reheat up to 70° C. to 80° C. for 0.5 to 1 hour.