What does a strict vegan lifestyle prohibit?
Veganism is often referred to as an extreme form of vegetarianism, though many of its practitioners don’t find it to be extreme at all. Vegans commit to plant-based living, eschewing the use of animal products.
As in a vegetarian diet, vegans avoid meat in their diets, as well as foods like eggs, cheese, honey, and whey. Those dedicated to a strict vegan lifestyle will also shun animal products in clothing as well, avoiding leather, fur, silk, and wool.
More Info:
en.wikipedia.org