Container head with elastic sealing

A multifunctional applicator system comprising:

• a container head having a liquid inlet end, a liquid outlet end, and a liquid channel extending therebetween;
• an elastic sealing structure disposed at or adjacent to the liquid outlet end, the elastic sealing structure being normally closed to prevent liquid leakage and elastically deformable to permit liquid flow under applied pressure;
• a rolling ball applicator rotatably mounted at the liquid outlet end in fluid communication with the elastic sealing structure for dispensing liquid onto a user's skin;
• and
• a detachable cover configured to press the rolling ball against the elastic sealing structure when fitted, thereby reinforcing sealing during storage and transport.

A method of dispensing and applying a liquid skincare composition using a container head, the method comprising:

• coupling the container head to a liquid storage container at a liquid inlet end;
• applying pressure to the liquid storage container such that liquid flows into a liquid channel of the container head;
• elastically deforming an end wall of an elastic sealing structure under liquid pressure to open a slit and discharge the liquid toward a rolling ball applicator;
• and
• rolling the rolling ball applicator against a user's skin to transfer and spread the liquid thereon.