Dispenser head for fluid container

A dispensing unit, comprising:

• a container body having a storage cavity and an agent containing therein and
• a dispenser head, which is detachably coupling with said container body, comprising:
• a hollow head body having an inserting body slidably inserting into said container body to communicate with said storage cavity, and a head housing defining a dispensing opening extended from said inserting body;
• an absorbing pad disposed in said head body contacting with said agent at one side and absorbing said agent within said absorbing pad;
• a ball dispenser, having an outer spherical applying surface, disposed at said head housing in a free rotation manner at a position that a first portion of said spherical applying surface of said ball dispenser directly contacts with an opposed side of said absorbing pad for said agent applying on said spherical applying surface while a second portion of said spherical applying surface of said ball dispenser is exposed out of said dispensing opening, wherein when said ball dispenser is freely rotated at said head housing, said agent is evenly applied on said spherical applying surface of said ball dispenser;
• and
• a plurality of retention arms radially extended from an inner wall of said head housing to contact with said spherical applying surface of said ball dispenser, wherein said retention arms not only retains said ball dispenser at said head housing in a free rotation manner but also holds said absorbing pad in position to ensure said first portion of said spherical applying surface of said ball dispenser being directly contacted with said absorbing pad, wherein a guiding channel is formed within said head housing between a gap of every two said retention arms such that said spherical applying surface of said ball dispenser further contacts with said absorbing agent through said guiding channels.