Thanks to the COVID-19 pandemic there has been a surge in demand of hand sanitisers in the market. But this has led to many small businesses jumping into the fray to cash in on the demand. Some of them use dangerous substances like methanol to make their products. Recently the U.S. Food and Drug Administration (FDA) has identified around 77 hand sanitizers as dangerous for health. According to the agency these sanitisers contain dangerous levels of methanol also known as wood alcohol which is a toxic substance. If you use these sanitisers you may experience nausea nerve damage and blindness.