Reconstruction, one of the most turbulent and controversial eras in American history, began during the Civil War and ended in 1877. It witnessed America's first experiment in interracial democracy.
1 Changes in skin color. 2  A chemical peel can cause treated skin to become darker than normal (hyperpigmentation) or lighter than normal (hypopigmentation). 3  Hyperpigmentation is more common after superficial peels, while hypopigmentation is more common after a deep peel.
There is a wide range of chemical peels and they peel to different depths: very superficial, superficial, moderate, and deep. 1  The depth of the peel is determined by three factors: how acidic it is (also known as the ph), the percentage or strength of the peel (20% glycolic vs 70% glycolic) and how long it stays on the skin.