Don’t apply directly. Lemon juice will contain citric acid which will damage your skin. Also you will feel terrible itching and uneasiness . you need to do it in this way.
1. Make a lotion with equal parts of lime juice, almond oil and glycerin and apply on the face. It will not only cure blackheads but the discoloring spots on the face too.
Other solution is
2 .Toothbrush And Toothpaste
1Get a toothbrush and apply an inch-sized small amount of toothpaste on the toothbrush. Wet the toothbrush and wet the affected area.3Gently with your toothbrush, scrub the affected area for a small amount of time, daily.
Make sure you do not apply too close to the eyes, as the vapours from methanol toothpastes can irritate the eyes.
If you have nose blackheads, apply an even smaller amount of toothpaste, and keep well clear from eyes.
6This method has also been known to work on spots, but is not guaranteed. Always sterilize the toothbrush with boiling-hot water after doing this method.