Dispersion characterized by comprising: at least one of the lipid peptide type compounds of formula (1) and formula (2) and pharmaceutically acceptable salts of the compounds； and at least one alcohol selected from the group consisting of 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, 2-ethyl-1,3-hexanediol and ethylene glycol monoalkyl ether or a mixed solution of at least one alcohol and water: in which R1 is a C9-23 aliphatic group； R2 is a hydrogen atom or a C1-4 alkyl group optionally having a C1-2 branching chain； R3 is a group - (CH2) n-X； n is a number from 1 to 4； and X is an amino group, a guanidino group, a -CONH2 group or a 5-membered ring that optionally has 1 to 3 nitrogen atom (s), a 6-membered ring that optionally has 1 to 3 atom (s) ) of nitrogen or a condensed heterocyclic ring consisting of a 5-membered ring and a 6-membered ring that optionally have 1 to 3 nitrogen atom (s), wherein R4 is a C9-23 aliphatic group； R5 to R7 are each independently a hydrogen atom, a C1-4 alkyl group optionally having a C1-2 branching chain or a group - (CH2) n-X； n is a number from 1 to 4； X is an amino group, a guanidino group, a -CONH2 group or a 5-membered ring that optionally has 1 to 3 nitrogen atom (s), a 6-membered ring that optionally has 1 to 3 atom (s) of nitrogen or a condensed heterocyclic ring consisting of a 5-membered ring and a 6-membered ring that optionally have 1 to 3 nitrogen atom (s).Dispersión caracterizada por comprender: al menos uno de los compuestos de tipo péptido lipídico de fórmula (1) y fórmula (2) y sales farmacéuticamente aceptables de los compuestos； y al menos un alcohol seleccionado del grupo que consiste en 1,2-pentanodiol, 1,2-hexanodiol, 1,2- octanodiol, 2-etil-1,3-hexanodiol y monoalquiléter de etilenglicol o una disolución mixta del al menos un alcohol y agua: en la que R1 es un grupo alifático C9-23； R2 es un átomo de hidrógeno o un grupo alquilo C1-4 que tiene opcionalmente una cadena de ramificación C1-2； R3 es un grupo -
