Extract the onion and garlic juices, combine them, and apply them to the dark patches. Allow it to sit for 15 minutes before rinsing it off. Potatoes are an excellent element for the treatment of tans and dark spots. Apply slices to the afflicted region or prepare a mixture with shredded potatoes and honey. Let it sit for 10 minutes before washing it off. Garlic is used by many people as a natural remedy for removing blackheads. The principle behind this method is that garlic has antibacterial properties that will help prevent future occurrences. Garlic also has strong anti-inflammatory qualities that will make your skin feel better if you happen to get some on you. To remove dark spots caused by acne, chop up two onions and slice eight cloves of garlic. Put the chopped vegetables in a bowl and pour in enough vodka to cover them by 1 inch. Cover the bowl with plastic wrap and let it sit for three days in the refrigerator. Strain out the solids and use the liquid as a face wash. It's okay to eat the garlic after doing this process so you can still enjoy its health benefits!