How is some make-up products made of animals??

although it sounds nasty,it is true that a lot of things with perfumes or scents in them (like certain types of body spray or lotions or soap) have animal urethra (chemical found in urine) in them to make them smell good, another example I can think of is masacara, which has bat phecies in itHow is some make-up products made of animals??
Most make-up products do not contain actual animal substances except for urine, which is used in perfume. Although, most of the time, make-up is only used on animals as a tester to make sure the product is not dangerous.