I just had BBL laser with halo today. Is it okay to have a drink of wine or will it ruin the results?

Congratulations - I think that combination is the very best skin improvement treatment that you can have if you only have a few days of downtime to give. 
Alcohol will absolutely not 'ruin' your results - no worries! The only risks would be that if you had blood vessels or redness treated with the BBL, you may have dilation of those blood vessels and get less improvement or even possibly a bruise. Also, if you were given any sedating mediations for pain or the treatment, those should not be combined with alcohol.

Thank you for your question. In the first few days after a Halo and BBL combination treatment swelling is very common. Most often it is seen under the eyes and in the cheeks. Some people swell more than others and depending on the depth and density of your treatment, it can be quite significant. While, for me, there aren't any direct contraindications to alcohol consumption after treatment, I highly caution my patients to refrain from it until there swelling has gone down. Usually this occurs within a day or two.