Why Are My Armpits Dark?

Have you ever looked under your arms and thought, "Why are my armpits dark?" You're not alone. People from all walks of life have experienced armpit discoloration. First, check with your doctor to rule out any medical concerns, like diabetes or adverse reactions to medication. In many cases, however, armpit discoloration is harmless.

Learn more about the causes of dark armpits and a few simple solutions to restore your underarms to their natural state.

Why Are My Armpits Dark? Causes of Dark Armpits

Genetics

Genetics is one reason for dark armpits. Melanin production—the substance that affects your hair, eye, and skin color—varies from person to person. People with darker skin have more melanin, which increases the risk of post-inflammatory hyperpigmentation, your body's natural protective response to skin injury or inflammation.

For example, one study showed that a group of women from the Philippines experienced underarm skin darkening associated with "melanocyte stimulation and increased melanin production." This effect notably increased with skin trauma, like hair plucking or shaving.

Hormonal Changes

Puberty, pregnancy, and menopause can change the appearance of skin pigmentation. Estrogen and progesterone, two of the main female sex hormones, can activate skin pigment cells. These hormones fluctuate at various life stages, which may result in armpit darkening. Hormone-related conditions, like polycystic ovary syndrome or Addison's disease, can also produce dermatological changes, including skin pigmentation.

Lifestyle Factors

Do you like to soak up the sun or have you recently changed deodorants? Several lifestyle and body care factors can impact armpit discoloration.

The sun's ultraviolet rays trigger increased melanin production to protect your skin from damage. This darkens the skin, resulting in pigmentary changes like tans, sunburns, and hyperpigmentation.

Irritation from clothing, friction, or shaving and using harsh skin care products can also increase melanin production. Examine your lifestyle and hygiene routine to see whether any of these causes might fit the bill.

Preventive Measures and Remedies

If dark underarm patches are making you feel uncomfortable or anything less than confident, you can take steps to prevent and minimize their appearance. Try these simple tips:

• Wear loose, breathable clothing.
• Use soaps and underarm products suitable for sensitive skin.
• Practice proper hair removal techniques or stop shaving.
• Reduce sun exposure.
• Try natural lightening remedies, like lemon slices or diluted tea tree oil (five drops of tea tree oil to eight ounces of water).
• Ask your doctor about topical creams, laser therapy, or other professional treatments.

Loving the Skin You're In

Whether you choose to embrace your pigment changes or take steps to reduce the appearance of dark armpits, a healthy skin care routine is a great place to start. Whatever's causing increased melanin production—hormonal changes, irritation, or genetics—tweaking your routine can fade discoloration or prevent it from worsening. Just remember to check with your doctor before trying home remedies or other treatment options.

Looking for more information about keeping your armpits healthy? Check out this guide to a deodorant detox and discover tips for choosing a deodorant for sensitive skin.

Image Source: Pexels | Pexels | Pexels

The views and opinions expressed in any guest post featured on our site are those of the guest author and do not necessarily reflect the opinions and views of Tom's of Maine.