Skin Care Education

Dark Spots

Localised areas of skin that appear darker than the surrounding complexion due to a concentration of excess melanin. A broad term covering several distinct types with different causes and behaviours.

What Are Dark Spots?

Dark spots is a broad colloquial term for any area of the skin that appears noticeably darker than the surrounding complexion due to an excess or uneven distribution of melanin, the pigment produced by cells called melanocytes. They can range from very small, concentrated spots to larger, more diffuse areas of discolouration, and can appear on the face, hands, chest, and other areas of the body.

Dark spots are extremely common and, in the vast majority of cases, entirely harmless. Their significance is primarily cosmetic: uneven pigmentation makes the complexion appear patchy, aged, or less healthy than it actually is, and can be a significant source of self-consciousness for those who experience it. For many people, dark spots are among the most consistent concerns they have about their skin’s appearance.

An important distinction to make from the outset is that dark spots is not a single condition. Several different types of skin changes are described by this term, and they differ meaningfully in their causes, their behaviour, and how they respond to different approaches. Identifying which type is present is the necessary first step in understanding how to address it effectively.

Types of Dark Spots

Sun spots (solar lentigines): flat, well-defined darker patches caused by cumulative UV exposure. Most common on the face, hands, chest, and shoulders. Surface-level and generally consistent in colour within each spot.
Post-inflammatory hyperpigmentation (PIH): flat dark marks left behind after skin inflammation, most commonly from acne, eczema, a cut, or any other source of skin irritation. Can affect all skin tones but tends to be more pronounced and longer-lasting in medium to deeper skin tones.
Melasma: broader, more diffuse patches of pigmentation driven by hormonal activity. Typically appears symmetrically across the cheeks, forehead, and upper lip. More persistent and more complex to address than other types.
Freckles (ephelides): small, scattered concentrations of pigment that are largely genetic in origin. Most common in fair-skinned individuals. Tend to darken with UV exposure and fade with reduced sun exposure or age.
Seborrhoeic keratoses: raised, waxy patches that can appear darker than the surrounding skin. More common with age. Distinct from flat hyperpigmentation and require dermatological assessment to confirm.

Causes and Contributing Factors

Factor	Description
UV exposure	The most consistent and widespread cause of dark spots. Repeated UV exposure over time stimulates melanocytes in sun-exposed areas to produce excess melanin, leading to the concentrated deposits that form visible spots. Even low-level daily UV exposure contributes to this accumulation over years.
Hormonal changes	Fluctuations in oestrogen and progesterone, particularly during pregnancy, while using hormonal contraceptives, or around perimenopause, can trigger excess melanin production in susceptible individuals. This is the primary mechanism behind melasma and other hormonally driven pigmentation.
Post-inflammatory response	Any inflammatory event in the skin, including acne breakouts, eczema flares, cuts, burns, insect bites, or aggressive skincare, can trigger a surge in localised melanin production during the healing process, leaving a flat dark mark after the inflammation has resolved.
Genetics	The tendency to develop dark spots in response to UV exposure, inflammation, or hormonal triggers is significantly influenced by genetics. Skin tone and melanin density are inherited characteristics that affect how intensely the skin responds to pigmentation triggers.
Certain medications	Some medications increase the skin’s sensitivity to UV radiation, making pigmentation more likely to develop in response to sun exposure. Others can directly stimulate melanin production as a side effect.
Age	As the skin ages, its ability to regulate melanin production evenly across the surface becomes less consistent. This contributes to the development of solar lentigines and a general increase in pigmentation variability in older skin.

Frequently Asked Questions: Dark Spots

No. Dark spots is a broad umbrella term that covers several distinct types of skin discolouration with different underlying causes and different behaviours. Sun spots are caused by UV exposure and tend to be stable. Post-inflammatory marks are caused by skin inflammation and gradually fade over time. Melasma is driven by hormonal activity and is significantly more persistent. Freckles are largely genetic and influenced by sun exposure. Identifying which type is present matters because the most effective approach differs considerably between them.

It depends on the type. Post-inflammatory hyperpigmentation marks frequently do fade naturally over months to years, particularly with consistent daily sun protection, which prevents UV stimulation from darkening the marks further. Freckles can fade with reduced sun exposure. Sun spots generally do not fade significantly without targeted treatment. Melasma is persistent and tends to recur without ongoing management even after it has been lightened. The rate and likelihood of natural fading varies considerably between individuals and skin tones.

The vast majority of dark spots are entirely benign. However, any new or changing pigmented lesion should be assessed by a dermatologist to rule out conditions that require medical attention. Particular attention should be paid to any spot that changes in size, shape, or colour over time, has irregular or poorly defined borders, contains multiple colours, bleeds, or appears suddenly in a way that is out of character with existing pigmentation. When in doubt, a professional dermatological assessment is always the appropriate step.

Deeper skin tones have a greater inherent density of melanocytes and a higher baseline capacity for melanin production. When a trigger such as UV exposure, inflammation, or hormonal activity stimulates melanin production, the response in deeper skin tones tends to be more intense and the resulting pigment deposit more concentrated. Additionally, the contrast between the dark spot and the surrounding skin can be greater, making it more visually prominent. For these reasons, dark spots in medium to deeper skin tones often require more targeted and carefully selected approaches to address effectively.