About the Product Looking for a hair serum that chases away all your hair problems while keeping them strong and frizz-free? Your search ends now. Good hair days are here with Mamaearth Onion Hair Serum. It’s time to trust the goodness of onion – an age-old home remedy to address hair issues like frizz, breakage, and hair fall. Onion - rich in Sulfur - makes your hair strong & reduces breakage. Biotin improves overall hair quality, reduces breakage, and increases thickness. Olive Oil helps in making hair smooth, and frizz-free. Safe for coloured, chemically treated hair, this Serum suits all hair types, is free of harmful chemicals & toxins.