I'm no wine connoisseur but I fancied trying some sparkling wine by the name of Rossini , Rosato. (Rose) No ingredients on the label. I mean it is lovely pink colour it could be paraffin.

I thought it was law to state the ingredients on a food /drink product.

Just found this guidance on labelling wine: https://www.food.gov.uk/business-guidance/wine-labelling

It looks like only additives over certain thresholds have to be labelled.

Hope it helps.