Oil-in-water type compound fir oil nano-emulsion composition and preparation method thereof

The invention discloses an oil-in-water type nano-emulsion containing fir oil, origanum oil and cinnamyl aldehyde. The oil-in-water type nano-emulsion is prepared from 30.00%-45.00% of a surfactant, 0.10%-10.00% of fir oil, 0.10%-6.00% of origanum oil, 0.10%-10.00% of cinnamyl aldehyde and the balance of distilled water. The oil-in-water type compound fir oil nano-emulsion composition is yellow orcolorless transparent liquid in appearance, the droplet diameter is distributed between 1 nm and 100 nm, the stability and wettability are good, the transdermal effect is good, the bioavailability offir oil, origanum oil and cinnamyl aldehyde is improved, and the drug metabolism time of the fir oil, origanum oil and cinnamyl aldehyde in vivo is delayed. The hand sanitizer has the effects of resisting bacteria, diminishing inflammation, killing mites, preventing corrosion and the like. The drug carrier disclosed by the invention is non-toxic, non-irritant, high in safety, simple to prepare, low in cost and convenient