Rin, a product of Hindustan Unilever, recently launched a comparative advertisement against Tide, a product of Procter & Gamble, showing Rin to be brighter and superior. This has escalated the long-standing rivalry between the two companies. While HUL claims the advertisement is factual, P&G has challenged it in court for being disparaging. There is debate around the legal and ethical implications of such comparative advertisements, as they could mislead consumers but companies argue they are protected under free speech laws if claims are substantiated.