Consumer Guidance Society of India (CGSI), the oldest consumer body of the country, tested 122 hand sanitizers in Mumbai and Thane as a part of a scientific study and found that nearly 50 per cent were adulterated. Out of them, four per cent contained toxic methanol, which can cause blindness.

The 54-year-old organisation, the oldest such body in the country, said it will forward the report to the Central government and the Food and Drug Administration so that action can be initiated.