As a dermatologist with over a decade of experience in skin health, I've encountered numerous patients with concerns about dark underarms. The darkening of the underarm area can be attributed to several factors, including:


1. Excessive Friction: Constant rubbing or friction from clothing can cause hyperpigmentation.

2. Axillary Hyperhidrosis: Excessive sweating can lead to a higher concentration of certain chemicals that may cause darkening.

3. Inflammation: Conditions like intertrigo or folliculitis can result in post-inflammatory hyperpigmentation.

4. Hormonal Changes: Fluctuations in hormone levels can affect melanin production, leading to darkening.

5. Use of Aluminum-based Antiperspirants: Some studies suggest a link between long-term use and skin irritation or darkening.

6. Poor Hygiene: Not cleaning the area properly can lead to bacterial or fungal overgrowth, which may darken the skin.
7.
Skin Conditions: Certain skin conditions like acanthosis nigricans can cause darkening of the skin.

To address dark underarms, it's important to maintain good hygiene, wear loose clothing to reduce friction, and consider using natural deodorants. If the darkening is due to a skin condition, it's best to consult a dermatologist for a proper diagnosis and treatment plan.

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Discolouration of the armpit skin can be caused by a number of things as it is very sensitive skin and can be easily irritated and lose moisture. ... Acanthosis nigricans - a skin condition characterised by areas of dark, velvety discoloration in body folds and creases, such as the armpits.read more >>