Cosmetic container cap with duo-mix function

A cosmetic container cap with a duo-mix function, comprising:

• a body part (102) in which a female fastening portion (102b) is formed below an upper open-type chamber (102a) where an accommodation space is formed to accommodate a first cosmetic content (A) of liquid or powder so as to be fastened to a male fastening portion (204) formed to be exposed in a container (202), and having a hollow dip tube (102c) formed to extend a predetermined length downward from the chamber (102a);
• a pumping member (110) coupled to the chamber (102a) of the body part (102) to press down the first cosmetic content (A) toward the container (202) to be mixed with a second cosmetic content (B) inside the container (202), and configured to pump a cosmetic mixture (C) in which the first cosmetic content (A) and the second cosmetic content (B) are mixed into the dip tube (102c) and the chamber (102a) to be discharged outside;
• and
• a dip tube sealing means for closing and opening the dip tube (102c) so that the first cosmetic content (A) and the second cosmetic content (B) are mixed.