Which products on Amazon are non-returnable?

Products that come under hygiene, personal care, and products with consumable nature are non-returnable on Amazon.

Hygiene products include Wind Instruments (Harmonicas & Flutes) etc

Personal care products include All inner apparel, socks, gym supporters, guards, swimsuits, Grooming products, etc.

Consumable nature includes Pet Food, Pet Shampoos and Conditioners, Pest Control, harnesses, aquarium supplies, and Pet Grooming Aids, Gold Coins / Gold Vedhanis / Gold Chips / Gold Bars / Silver Coins / Silver Bars / Silver Chips / Silver Bullion etc