It’s World Smile Day This adorable Quokka is the perfect ambassador for kindness, joy, and the power of a contagious smile. Don't miss another reason to smile. Simula at Wakas Sydney still available at Humanitix.com #SB19 #SaWWorldTourOceania #SaWWorldTourSydney Load image 38 KB
Happy World Smile Day! Smiles are contagious, just like the spirit of resilience, courage, and community that shines through the Invictus Movement. #WeAreInvictus #IAMHere #WorldSmileDay Load image Load image Load image Load image
— Invictus Games Foundation 💛🖤 (@WeAreInvictus) October 3, 2025
The flowers of the bee orchid (Ophrys apifera) mimic bees to attract pollinators. And what jolly, funny little welcoming bees they are! Perfect to bring a smile to your face on #WorldSmileDay. #nature #photography Load image
It's #WorldSmileDay & #FlowersOnFriday. A vase of flowers in your home is a reason to smile every day! Today I share my colourful chrysanthemums and will be listening to Taylor Swift’s new album. Have a lovely weekend everyone, and please stay safe from Storm Amy! Load image
Today is #WorldSmileDay When you smile, endorphins are created. These are neurotransmitters that cause feelings of pleasure. Many studies show that smiling is probably contagious in that the brain releases happy hormones, which makes the recipient of a smile want to smile back. Show more Load image 5 KB
FIVER FRIDAY this WORLD SMILE DAY Just £5, $5, or €5 can make a world of difference to sick, injured & abandoned donkeys & foals. Please, give a little hope today. Our charity relies entirely on your donations to continue our vital work. Thanks ow.ly/eXHW50VbYQv Load image
Today it’s #worldsmileday . why not make someone smile and laugh by sending them a funny card from my #etsy shop. I’ve got lots of jokes and styles available okthenwhatsnextcraft.etsy.com #earlybiz #crochet #elevenseshour Load image Load image
Grabe namang smile ‘yan, Ralph! And with a special surprise this #WorldSmileDay?! What’s your guess? Join our Mang Inasal Nation Facebook group to find out facebook.com/share/g/1Cj1Z2 … #ILoveMangInasal Load image 14 KB
A smiley sunshine brooch - a little cutie for #WorldSmileDay. Happy Friday everyone! #handsewn #elliestreasures #Uniqueness #giftideas Load image
— Elaine @ Ellie's Treasures 🧵 (@elliestreasures) October 3, 2025
World Smile Day History
World Smile Day aims to spread happiness through acts of kindness and by encouraging people to smile more. The observance seeks to promote a positive outlook, connecting people from diverse backgrounds, and highlighting the power of a simple smile to brighten someone's day. Not only does smiling make others feel good, but it also has been shown to improve our own mood, mental wellbeing, and even our physical health.
The concept of World Smile Day was initiated by Harvey Ball, an American artist who created the iconic smiley face in 1963. He proposed that people dedicate one day each year - the first Friday of October - to sharing smiles and spreading cheer, regardless of nationality, race, or religion. In the United Kingdom, this event has gained considerable momentum in recent years, with individuals and organisations organising various initiatives to promote the benefits of smiling. A growing body of research supports this notion, as a study conducted by the University of Portsmouth found that British people smile an average of 11 times per day, with the majority of respondents reporting that smiling makes them feel better, both mentally and physically.
In the UK, World Smile Day is often observed through fun and engaging activities such as flash mobs, community gatherings, and online campaigns that champion acts of kindness, good humour, and positive thinking. Public figures, celebrities, and influencers often share their own experiences and tips for maintaining a positive mindset, while schools, workspaces, and community spaces are encouraged to create an environment that nurtures and promotes happiness. World Smile Day is held on the first Friday of October.
World Smile Day facts & quotes
A Duchenne smile is a full smile involving all the facial muscles. It is named after 19th century French neurologist Guillaume Duchenne.
Even a forced smile can lead to a mood boost. The physical act of smiling releases dopamine in the brain, which gives feelings of happiness and satisfaction.
Contrary to popular belief, smiling does not take more effort. It usually takes 12 muscles to smile and 11 muscles to frown. Some studies suggest that we may use as many as 43 muscles to frown.
Despite stereotypes of the British Smile, the World Health Organization has stated that British people have among the healthiest teeth in the world. This is likely due to the NHS and its dental coverage, making regular dental check-ups and treatments accessible to all.
The traditional British stiff upper lip, a trait which reflects stoicism and firmness in the face of adversity, is often symbolized by a lack of excessive emotion or smiling.
In the News and Trending in the UK for World Smile Day