The present invention refers to a system for docking and undocking packages for cosmetics, capable of offering a simplified and efficient fitting and detaching mechanism for the packages The system comprises a first package and a second package for cosmetics, the first and second packages being respectively comprised by a first and second bottle, the first and second bottles being respectively associated with a first cap and a second cap, the first package for cosmetics being docked to the second package for cosmetics upon a compression movement, and concomitantly, upon the cooperation between a first cap projection and a second cap projection respectively arranged on the first and second caps, the first package for cosmetics being undocked from the second package for cosmetics upon a traction movement substantially contrary to the compression movement, the first cap projection having a geometry which is identical to the second cap projection.