Why is cholesterol such a common ingredient in cosmetics?

Cosmetics such as makeup and lipstickWhy is cholesterol such a common ingredient in cosmetics?
Cholesterol is what holds the lipstick together and stick on your lips.Why is cholesterol such a common ingredient in cosmetics?
and whats up with the animal by products in make up? or is that the cholesterol? idk either way, sick!
It makes lipsticks, cream blushes, concealers, and foundations really smooth and creamy. Before cholesterol was put into cosmetics, whale oil was used, which I think is more disgusting and inhumane. Obviously that ingredient has been banned. I hope that helps!