Wrong beliefs about drinking water, and is it true that drinking water reduces weight?

Drinking plenty of water helps in losing weight: 

In fact, drinking water makes a person feel full without gaining any calories, as drinking water and limiting food intake together help in losing weight, but water itself does not have magical powers in reducing fat.

Drinking plenty of water leads to beautiful skin: The human body contains 60% of water, so if he added more cups of water, the effect would be limited, although 500 ml of water makes blood flow to the skin, but this matter has nothing to do with the exact health of the skin.