Rinse out and rinse off.. How are they different?

Thank you.
The key is the difference between "out" and "off". To "rinse out" refers to a container. To "rinse off" refers to a surface. So, you rinse out a cup. You rinse off a plate.
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If i use with hair or face, which one can be use?
If i want to use with hair and skin, which one can be use?
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Hair is not a container. Skin is not a container. So 'rinse out' doesn't work.

Use 'rinse off' or just 'rinse'.