Post-inflammatory hyperpigmentation is a temporary darkening of the skin that has been inflamed or injured. It doesn’t itch or hurt, but most people with it do not like how it looks. It gets worse with sunlight. The sun is hard to avoid, but a combination of over-the-counter options + daily sun protection can really help.

Melasma is a blotchy brown darkening of the skin on the face. It is called the “mask of pregnancy” because it tends to occur during or after pregnancy. It gets worse with sunlight. The sun is hard to avoid, but a combination of over-the-counter options + daily sun protection can really help.

Acanthosis nigricans is dark, thick, velvety skin that most often appears on the neck, armpits, groin, or under the breasts. While it doesn’t itch or hurt, it can be noticeable and bothersome for many people. A combination of eating healthier, topical retinoids, and mild acids can help.