is elf liquid putty primer water based

It depends on the type of elf liquid putty primer you're using. Some are water-based and others are oil-based, so it's important to check the label before using it. Water-based primers are easier to clean up and are generally less toxic, while oil-based primers are more durable and can better cover stains. If you're unsure which type you have, it's best to test a small area first to see how it performs.