It is a method for producing a preservative containing an octagonal fennel fruit/seed oil (Illicium verum (anise) fruit/seed oil) extract presented in the present invention, and makes it possible to manufacture without using preservatives when manufacturing cosmetics. This invention does not require the use of preservatives added to prevent deterioration of cosmetics, and it is possible to manufacture cosmetics without changing the properties of the product, and as a technology with excellent preservation properties, it is applicable to cosmetics, food, and pharmaceutical fields that use preservatives to prevent deterioration Make it possible.
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