“Acne vulgaris (or simply acne) is a long-term skin condition characterized by areas of blackheads, whiteheads, pimples, greasy skin, and possibly scarring”, according to Wikipedia.org
Affecting over 40 million people in the U.S., acne is the most common skin disorder. Nearly 80% of those between the ages of 11 and 30, suffer with acne on their face, chest or back.
100 million is spent yearly on non-prescription acne treatment, this does not include cleansers, special soaps, prescriptions or doctor appointments.
Some of the leading causes of acne are oil and grease build up, emotional stress, heredity and hormonal factors. It is believed that 80% of the acne cases are due hereditary factors.
Sources:
https://www.aad.org/dermatology-a-to-z/diseases-and-treatments/a—d/acne
http://pantothenicacidacne.net/
https://en.wikipedia.org/wiki/Acne_vulgaris