Hyperpigmentation (dark spots) is a common skin problem that causes serious concern to those who are affected. It is typically caused by the increase of the production and accumulation of melanin in the skin due to hormonal imbalance, sunlight exposure, genetics, aging and cutaneous inflammation because of acne and contact dermatitis. Chemical or mechanical stress also contributes to hyperpigmentation as an example of what happens in the axillary and bikini line regions. Due to its complexity...