8 At-Home Remedies Your Grandma Swears by That Actually Work

Even though it’s cologne, a sprinkling of this liquid — which contains natural herbs — is often used in Peru and other South American cultures to protect you from spirits and cool down fevers. While Dr. Roach can’t speak to its power against evil, he said it can help you cool down when your temperature is rising. “I wasn’t familiar with this one, but after some research, there's something behind it,” he said. “Sprinkling it over your head won’t eliminate your fever, but it can make you feel more comfortable, especially when you add in a fan.”