The term 'cosmetic plant' can refer to a variety of plants that are used in cosmetics, such as aloe. Aloe is a succulent plant species that is native to Africa and is widely cultivated for its medicinal and cosmetic properties. It is often used in skin care products due to its moisturizing and healing properties. Aloe is also used in hair care products, as it can help to reduce dandruff and promote healthy hair growth.