What is the ruling on using alcohol-based perfumes, what are the ingredients that might be prohibited, and how can a Muslim verify the components of perfumes if they are unclear?

The ruling on using alcoholic perfumes is a matter of disagreement among scholars regarding the impurity of alcohol. Those who deem it impure prohibit its use unless it undergoes a transformation. Those who do not consider it impure permit its use. The preponderant opinion is that it is impure. Anything for which there is no evidence of impurity is considered pure according to the original principle.