Can you please tell me what Bright White soft gel paste is used for? Does it actually make icing white/ whiter?

Bright white is used to make your icing whiter. However, if you are using butter in your icing, it will not turn it snow white but it will make it whiter. It also has a little of a drying effect on the icing so you may need to add extra liquid. You will need to experiment with your recipe. Alan