Sweet almond skin is non-toxic, while bitter almond skin is slightly toxic. Almonds are divided into sweet almonds and bitter almonds, the surface of which are wrapped in a thin layer of skin, of which the sweet almond skin and pulp, are non-toxic, and the taste is relatively sweet, can be consumed as a snack, is a more common life of a kind of nut food. Bitter almonds as well as the skin are slightly toxic (containing bitter amygdalin), generally eaten as a medicinal herb, need to be processed through a special technology, the surface of the almond skin removal, before eating or into the medicine. If you peel the skin yourself, you also need to wear gloves for good protection, otherwise the almond skin will cause skin irritation, itching, redness and other problems. There are two different types of almonds, and you need to be careful when buying and eating them.