Dating apps are a minefield – but when I was using them, I found there was one thing that got me more attention than anything else.

The golden ticket to a mountain of matches? Pictures where I was grinning. Smiling snaps got me more matches than serious photos. Why? Because basic psychology says you are more likely to trust a smiling person and more inclined to feel happier around them (it's called emotional contagion). You perceive them as warmer and, believe it or not, more competent.

A new study also shows smiling makes you significantly more attractive to people than having Botox, according to a report in The Times that said a study by Tilburg University in the Netherlands found having Botox increases your attractiveness by 0.07 on a scale of one to seven. So, if you were a five befo

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