Requirements For Essence

As an industrial product, essence has its quality specifications. Although the quality indicators of various manufacturers are different, the following properties are necessary.
(1) Has a certain aroma, fragrance, or characteristic scent.
(2) There are certain proportions and preparation processes of spices (sometimes including carriers, excipients, solvents, or other additives).
(3) Safe for human body (external or internal use).
(4) Adapt to certain fragrance application requirements (including suitable fragrance process conditions, price requirements, etc.).
(5) It should be compatible with the performance and effectiveness of the fragrance medium, and maintain a certain degree of stability and durability.
(6) To comply with the prescribed dosage form.