The invention provides anti-
acne cream based on high-purity herbal extract, and a preparation method of the anti-
acne cream. The preparation method concretely comprises the following steps: (1) cleaning natural herbaceous plants,
drying the cleaned herbaceous plants in the air, then
cutting the dried herbaceous plants and
grinding into
powder, mixing the
powder of the herbaceous plants according to proportion, adding an
ethanol water solution into the mixture, carrying out
ultrasonic dispersion, carrying out heat
reflux extraction for twice, and carrying out rotary
evaporation and concentration on filtrate until the filtrate is free from
alcohol taste to obtain extract of the natural herbaceous plants; (2) centrifuging the extract of the natural herbaceous plants and taking supernatant of the extract, putting the supernatant into dry
macroporous resin, standing still and carrying out suction
filtration; after absorption, transferring the
macroporous resin into a 80-90% of
ethanol water solution, standing still and carrying out suction
filtration; taking out the
macroporous resin, carrying out rotary
evaporation on filtrate until the filtrate is free from
alcohol taste to obtain purified extract of the natural herbaceous plants; (3) mixing auxiliary agents, heating mixture up to 80-90 DEG C, stirring the heated mixture until the mixture is completely dissolved, cooling to 45-50 DEG C, adding the purified extract of the natural herbaceous plants into the mixture, evenly stirring, carrying out heat preservation, and then carrying out rotary
evaporation until the mixture is in a cream state to obtain the anti-
acne cream based on the high-purity herbal extract.