Melasma vs Hyperpigmentation: What Is the Difference and How Do You Treat Each
A dark patch appears on the skin and, almost instantly, it gets a label: Hyperpigmentation, melasma, sun damage, whichever word comes to mind first. The truth is these words are not interchangeable, even though they get treated that way often. Both describe skin that has turned darker than the tissue around it, but that is where the similarity ends.
Hyperpigmentation is the umbrella term, the broad category that covers almost any dark mark caused by excess melanin. Melasma sits underneath that umbrella as something far more specific: Hormonally driven, symmetrical, and prone to reappearing long after it seems to have faded. Knowing which one is actually on the skin changes everything about how it should be treated.
What Is Hyperpigmentation?
Hyperpigmentation is an umbrella term for any area of skin that has become darker than the tissue surrounding it, caused by an excess of melanin. It is not one condition but a category, and it appears in several distinct forms. Sun spots and age spots develop from cumulative UV exposure over time. Post-inflammatory marks develop after the skin has been through some form of trauma, whether that is a breakout, a cut or a rash.
UV exposure is the most significant trigger. Melanin production increases as a protective response to sunlight, which is why unprotected sun exposure is the single largest contributor to visible pigmentation over time. Inflammation is the second major driver, since any disruption to the skin barrier, from acne to injury, can prompt localised overproduction of melanin as the skin heals. Genetics and skin type also play a part. Skin with a higher baseline melanin level tends to produce more visible pigmentation once triggered, which is why some skin tones are more prone to hyperpigmentation than others.
What Is Melasma?
Melasma is a more specific, more complex condition within the hyperpigmentation category. It presents as symmetrical, greyish-brown patches, typically across the cheeks, forehead, nose and upper lip, and it behaves differently to general pigmentation from the outset. Rather than developing from injury or inflammation, melasma is driven primarily by hormonal activity within the skin.
Pregnancy, hormonal contraception and hormone replacement therapy are its most common triggers, which is why melasma shows such a strong pattern among women. Sun exposure compounds the condition significantly, often deepening its appearance through the summer months. The British Skin Foundation notes that melasma is considerably more common in women, particularly during pregnancy, when up to half may be affected, a pattern well known enough to have earned melasma its own nickname: the pregnancy mask.
Melasma vs Hyperpigmentation: The Key Differences
The terms melasma and hyperpigmentation are often used interchangeably, but they are not the same condition. The simplest way to understand the difference is that all melasma is a form of hyperpigmentation, but not all hyperpigmentation is melasma. General hyperpigmentation is usually linked to a specific trigger, such as sun exposure, inflammation or a previous blemish, and often appears as isolated dark marks. Melasma, by contrast, typically develops as symmetrical patches across the central face and is strongly influenced by hormones as well as ultraviolet and visible light exposure. It is also more persistent, with a tendency to recur even after successful treatment.
Is Melasma More Common During Pregnancy?
Yes, considerably so, and it is a subject Dr Maryam Zamani understands from more than a clinical perspective. Rising oestrogen and progesterone during pregnancy stimulate melanocytes, the skin's pigment-producing cells, which is often enough to trigger melasma or intensify it where it already exists. Dr Zamani experienced this herself in the form of post-pregnancy melasma, an experience that shaped how closely MZ SKIN's formulas balance efficacy with everyday ritual. For many women, melasma fades gradually in the months after birth, though it can resurface in future pregnancies or with further unprotected sun exposure. Daily broad-spectrum SPF remains the single most effective safeguard against melasma appearing, or worsening, during this time.
How to Treat Hyperpigmentation
General hyperpigmentation tends to respond well to consistent use of brightening actives. Vitamin C is a key ingredient here, since it works as an antioxidant while helping to inhibit excess melanin production. MZ SKIN's Brighten & Perfect 10% Vitamin C Corrective Serum combines a stabilised 10% vitamin C with a peptide complex and tranexamic acid, targeting dark spots, age spots and uneven tone. Part of the MZ SKIN 3-Step Ritual, it falls into the ENHANCE step, delivering targeted care to reduce the appearance of dark spots and improve skin brightness and tone. Apply morning and evening, before creams or moisturisers. Sun protection is essential alongside any brightening routine, since unprotected UV exposure will continue to trigger new pigmentation, so always follow with sunscreen during the day. MZ SKIN Expert UV Protector SPF50 provides broad-spectrum UVA and UVB defence and is formulated to be worn every day, whatever the weather.
How to Manage Melasma
Skincare alone often is not enough for melasma. Topical actives work well on pigment sitting near the skin's surface, but melasma frequently sits deeper, in the dermal layer, where creams and serums cannot reach. MZ SKIN's Brighten & Perfect 10% Vitamin C Corrective Serum, with its tranexamic acid content, can support surface-level maintenance between treatments, but it is not a substitute for addressing melasma at depth. Its hormonal drivers also mean it can resist a routine that would clear general hyperpigmentation with ease.
For persistent cases, Dr Maryam Zamani offers a dedicated Melasma Protocol at her London clinic, a two-tiered, laser-led programme built specifically for melasma. Patients are placed into Tier 1 or Tier 2 depending on severity and skin sensitivity. Tier 1 targets moderate to severe melasma, addressing both dermal and epidermal pigment. Tier 2 offers a gentler option for earlier-stage melasma or sensitive skin.
Injectable tranexamic acid is another option, used to gradually lighten discolouration over a course of sessions, often combined with microneedling to reduce the risk of recurrence. For deeper, more resistant melasma, a dermamelan depigmentation peel may be recommended.
The MZ SKIN Approach
MZ SKIN's philosophy is built around a reveal, enhance and protect approach to pigmentation. Brightening actives such as vitamin C and tranexamic acid work to fade surface-level marks and inhibit further melanin production, while daily SPF protects those results and helps prevent new pigmentation from forming. For general hyperpigmentation, this routine is often enough on its own. For melasma, it forms one part of a longer-term strategy, supporting the skin day to day alongside the specialist, clinic-based treatments Dr Zamani recommends for pigment sitting deeper in the skin. Together, skincare and clinical care offer the most complete route to a more even, radiant complexion.