Plato talks about three levels of pleasure. First is sensual or physical pleasure, of which sex is a great example. A second level is sensuous or esthetic pleasure, such as admiring someoneâs beauty, or enjoying oneâs relationship in marriage. But the highest level is ideal pleasure, the pleasures of the mind.
Harmful side effects. 1  The chemicals used for fragrance and other additives in the product may cause various allergies. 2  The propellants used for facilitating the hairspray to reach the nozzle and come out as a fine spray may be harmful.
Less than six months later, in February 2004, a leak in a heat exchanger at Sarnia's Imperial Oil discharged cooling water to the St. Clair River contaminated with two potentially harmful chemicals, methyl ethyl ketone and methyl isobutyl ketone.