Acanthosis nigricans is thick, dark, velvety skin usually in the armpits, on the neck, in the groin area, and under the breasts. Because it is often noticeable and either annoying or embarrassing to those who have it. A combination of eating healthier, topical retinoids, and mild acids are often helpful.

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.