Question: how to treat a fungal infection naturally?
Answer: Apple cider vinegar. Apple cider vinegar has been found to inhibit the growth of candida albicans, the strain of fungi that typically causes yeast infections. ... 
Boric acid. ... 
Coconut oil. ... 
Cranberry juice or pills. ... 
Douching. ... 
Garlic. ... 
Hydrogen peroxide. ... 
Oregano oil.