Mission accomplished 100%.

At The Beginning:
This is a cleaner, no new printhead!
In case of obvious defects (printer displays specific error message) I can recommend the hotline by the manufacturer of the printer!
This remedies helps clogged printheads (eg, if ink has dried)!

And now for my opinion:
I head already cleaned with ethanol, which the ink slightly removed and replaced, but only for a fraction.
Then I ordered before new investment of a printing head of this soup here, which completely my printhead freed within 30 minutes from ink.
He should about 30 minutes with his head in a dish, full of it, filters (supplied).
Then rinse with the stuff (a syringe is also included), so wet the ink receiving surface, while on a tea towel he or similar is, print a few large images and everything is like new again.

am thrilled!

And with the amount it can make really sure 100 times.