It's not your imagination: after a glass of white wine or a margarita, your mouth feels drier and less fresh. It's not just a sensation — it's biochemical.
Alcohol is a natural disinfectant, but in the mouth it disrupts the oral microbiome and reduces saliva production, which plays an essential role in self-cleansing and neutralising bacteria. The result: the bacteria responsible for bad odours can multiply more freely, especially on the tongue and between the teeth.
And since we're talking about summer, we sweat more and drink less water than we think — and dehydration worsens dry mouth, and therefore bad breath.