Using potato juice for face treatments can be done in a few simple ways. 

Here's how you can prepare and apply potato-based face treatments:

Potato Juice Treatment

Preparation:

• Select a medium-sized, clean potato. Organic is preferable.
• To remove any dirt, wash the potato properly.
• Peel the potato and grate it using a clean grater.
• Squeeze the grated potato over a bowl or use a cheesecloth to extract the juice.

Application:

• Cleanse your face thoroughly before applying.
• Apply the potato juice with some natural ingredients like honey, and milk evenly on your face using a cotton ball or pad.
• Let it sit for 15-20 minutes.
• Wash it off with water and pat your face dry.
• Apply a moisturizer suitable for your skin type.
• Juice of potato and aloe vera for face overnight can also be effective  

Potato Slice Treatment

Preparation:

• Choose a fresh potato and wash it properly.
• Slice the potato into thin rounds or cut potato ice cubes for face.
• Ensure they are not too thick to stick to your face.

Application:

• Remove any makeup or dirt to clean your face.
• Place the potato slices directly on your face, especially on areas with blemishes or dark spots.
• Leave them on for 10-15 minutes.
• Remove the slices and rinse your face with water.
• Finish with a light moisturizer.