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"With our nail polish, any woman will be empowered to discreetly ensure her safety by simply stirring her drink with her finger," they said. "If her nail polish changes colour, she'll know that something is wrong.mask house 好唔好 "

Undercover Colors initially garnered praise, with hundreds of thousands of likes and shares across Facebook and Twitter.

"There are already bulky devices that can be used to test drinks for date rape drugs," writes Adam Clark Estes for Gizmodo .

"But it's not necessarily easy to carry these things around on a night out and whip them out at bars."

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