The article introduces 5 methods using potatoes to reduce dark circles under the eyes:

1. Applying raw potato slices: Cut potatoes into thin slices, chill them, then place over the eyes for 10-15 minutes.

2. Potato juice: Blend potatoes, extract the juice, soak a cotton pad in the juice, and apply to the eye area for 10-15 minutes.

3. Potato and fresh milk: Mix blended potatoes with fresh milk, apply the mixture to the eye area, and leave for 15 minutes.

4. Potato and cucumber: Mix potato juice with cucumber juice, soak a cotton pad in the mixture, and apply to the eyes for 15 minutes.

5. Potato and lemon: Mix potato juice with a few drops of lemon juice, apply to the eye area, and leave for 10-15 minutes.

These methods should be performed 2-3 times per week for optimal results.