This proccess is according to HP Tech support themselves.
New Printhead: https://amzn.to/2r0Teyu
It's simple to fix your clogged HP Printhead. Simply remove it and soak it on a wet paper towel for 5 to 10 minutes. It's also worth noting that your printer's printhead will last longer if you leave your HP printer on. This is not the case with every brand printer. Epson for example recommends turning your printer off when it's not in use.