Bring those winning smiles on Saturday to enter colgateanz Optic White Smiles on the Field competition! Be on-course 12-4pm and upload a photo of your Optic White Smile to Facebook or Instagram using hashtag #OpticWhiteSmile for the chance to win $2,000 cash from colgateanz! #opticwhitesmile #opticwhiteracing #theraces #sydneyracing #springcarnival