For decades, Hindustan Unilever’s (HUL) Lifebuoy has been shorthand for hygiene. Its jingle — Lifebuoy hai jahan, tandurusti hai waha — was a promise wrapped in red and white packaging.

Others have reacted positively to the onomatopoeic tagline. “Tube it splosh it is a glorious joyful thing, that both nails and pokes fun at the whole public health messaging genre,” writes @nickparker ...