Why Do Dark Patches Appear on the Skin?

Brown patches on your cheeks, forehead, nose or other areas can be frustrating, especially when they don't disappear easily.

But not every dark patch is simply tanning. It could be melasma, post-inflammatory hyperpigmentation (PIH), sun-related pigmentation or another skin condition.

That's why identifying the cause is the first step toward choosing the right pigmentation treatment.

What Is Melasma?

Melasma is a common pigmentation disorder that causes brown to greyish-brown patches, most commonly on the face. It often appears on the:

• Cheeks
• Forehead
• Nose
• Chin
• Jawline

Melasma is often symmetrical and can become more noticeable after sun exposure.

What Causes Melasma?

Melasma is usually influenced by multiple factors rather than one single cause. These may include:

• UV exposure
• Visible light
• Hormonal changes
• Pregnancy
• Certain medications
• Genetic tendency
• Heat and environmental factors

Because of these triggers, melasma can improve and then become darker again.

What Is Post-Inflammatory Hyperpigmentation?

Post-inflammatory hyperpigmentation (PIH) develops after the skin experiences inflammation or injury. A healed pimple may leave a brown or darker mark even after the inflammation has disappeared. PIH can also develop after certain skin conditions, irritation or procedures.

What Is Sun Damage?

Repeated exposure to ultraviolet radiation can cause different forms of sun damage, including uneven pigmentation and sun spots.

How Is Melasma Treated?

There is no single treatment that works for every case of melasma. Treatment usually focuses on reducing excess pigmentation and controlling the triggers that make it worse.

Depending on the patient, a dermatologist may recommend:

• Medical topical treatments
• Sunscreen and photoprotection
• Chemical peels
• Selected laser treatments
• Combination treatment

Can Chemical Peels Help Pigmentation?

Chemical peels use controlled exfoliation to improve selected pigmentation and skin-tone concerns. The type of peel matters.

Glycolic Acid Peel

Uses glycolic acid (an AHA) to exfoliate superficial layers for selected cases of uneven skin tone and superficial dullness.

Demelan Peel

Used in pigmentation-focused treatment plans when improving excess epidermal and dermal pigment is one of the clinical goals.

Retinol Peel

Uses a retinoid-based approach to support skin renewal and address texture and pigment concerns.

Can Laser Treatment Improve Skin Tone?

For selected patients, laser procedures like Nd:YAG laser may be considered in specific pigmentation and skin-toning protocols.

However, laser treatment isn't automatically suitable for every pigmentation problem. In darker skin types (Indian skin types IV & V), inappropriate laser treatment can trigger severe post-inflammatory hyperpigmentation.

What About Face Darkening and Body Pigmentation?

Face darkening can have several causes, including tanning, melasma, PIH and irritation. Pigmentation can also occur on other body areas (neck darkening, underarm pigmentation, body pigmentation).

Why Does Pigmentation Come Back?

Pigmentation can return because triggering factors (like UV exposure or hormones) remain present. Melasma is often a chronic condition requiring ongoing management rather than a one-time procedure.

Final Thoughts

Melasma, PIH, tanning and sun damage can all create darker-looking skin, but they aren't the same problem. The right treatment starts with identifying what is actually causing the pigmentation.