How to loose 10 kgs in 10 days

There are ways to do it but they are not very healthy.

If you lose weight that fast you can expect to put it straight back on in a few weeks.
I did a soup diet about a year ago and I lost 5 kg.
As soon as I stopped that diet the weight came straight back on.

The best way to lose weight is just gradually through frequent small meals (healthy ones of coarse) and plenty of exercise.

You can't lose 10kg in ten days. If you do an ultra low carb diet, you can lose about 4-5kg, but most of that is water and will come back as soon as you start eating carbs again.

Why do you want to lose this much?