Melasma vs Post-Inflammatory Hyperpigmentation: What's the Difference?

Melasma and post-inflammatory hyperpigmentation (PIH) are often confused because both cause patches of darker skin. But they have different drivers, and telling them apart matters, because they are managed differently.

Assessment is what distinguishes them and guides safe, effective treatment.

What melasma is

Melasma tends to appear as larger, symmetrical patches, often across the cheeks, forehead or upper lip. It is influenced by a combination of factors including hormones, sunlight and heat, which is why it can be persistent and prone to flaring. It is more common in women and in richer skin tones.

What PIH is

PIH follows inflammation or injury, such as acne, a skin reaction or an aggressive procedure. It appears where that inflammation occurred, so it usually maps to previous spots or irritation rather than forming symmetrical patches.

Why the distinction matters

Melasma can be aggravated by heat and by overly aggressive treatment, so it calls for a particularly measured approach. PIH is often more responsive once the underlying inflammation is controlled. Treating one as if it were the other risks poor results or a flare, which is why accurate assessment comes first.

How they are approached

Both require consistent homecare and daily SPF alongside professional treatment. Both are addressed within the Pigment Correction Programme, with the plan tailored to which condition you have and your skin type.

Frequently Asked Questions

Can I have both?

Yes, it is possible to have melasma and PIH at the same time, which is another reason assessment is important before starting treatment.

Does sun protection help both?

Yes. Daily broad-spectrum SPF is essential for both, and is especially important for melasma, which is strongly influenced by light and heat.

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