Lemon
The citric acid present in lemon fights against the infections and the antioxidants present in lemon accelerates the healing process.
Gently rub your armpit with a slice of lemon. Wait for 5 minutes and rinse with cold water. Repeat this 2 or 3 times a day. If you have a sensitive skin, mix it with water.
Alternatively, mix 2 spoons of lemon and 1 spoon of honey, apply it on the area, wait for 15-20 minutes and then rinse with cold water.
Do not apply this after shaving or if you have an open wound on your skin!