Pigment spots are changes in skin colour caused by increased or uneven melanin production. This pigment is the body's natural protection against sunlight, but an excess of it in certain areas creates darker patches. Such changes can vary greatly: from small freckles to large patches of melasma or solar lentigines.
They affect not only outward appearance but also psychological well-being – many people feel self-conscious about them and hide their skin under make-up or clothing. Although they are often thought of as a purely cosmetic flaw, pigment spots in fact reflect wider skin processes, as they are closely linked to ageing, inflammation and environmental damage.
HOW DO PIGMENT SPOTS FORM?
The main centre of pigment production is the melanocytes – specialised cells that respond to ultraviolet, visible and infrared radiation. This radiation activates the enzyme tyrosinase and speeds up melanin synthesis. Melanosomes – small pigment "capsules" – are then transferred to keratinocytes, which make up the main layer of the epidermis. If the pigment is distributed evenly, the skin has a uniform tone, but if the process becomes uneven, spots appear. Inflammation contributes greatly to this – pimples, eczema and chemical or mechanical injuries cause additional melanocyte activation, which is why post-inflammatory hyperpigmentation is very common, especially in people with darker skin phototypes. Hormones are another important factor: oestrogens and progesterone together with ultraviolet radiation create conditions for melasma to develop, while solar lentigines appear as a result of chronic UV exposure and structural changes in the skin.
EFFECT ON SKIN TONE
Skin tone is the overall evenness of skin colour, which gives a youthful and healthy appearance. When melanin is distributed unevenly, the skin loses its clarity and mottled areas appear, visually creating a "map" effect.
Melasma usually appears symmetrically on the forehead, cheeks or upper lip, while post-inflammatory spots are more irregular, resemble shadows and often persist for a long time. Such pigmentation absorbs light, so the skin becomes dull, less radiant and greyer-looking. In some cases vascular components also play a part, further reducing light scattering. Phototype also matters – the darker the skin, the greater the risk that pigmentation will be more intense and last longer.
EFFECT ON SKIN TEXTURE
Pigmentation is almost never the only problem – it usually appears together with signs of photoageing. Over time, ultraviolet radiation breaks down collagen fibres, causes elastosis and disrupts keratinocyte differentiation and the integrity of the skin barrier. As a result, the skin becomes rougher, its surface uneven, pores more visible and fine lines more noticeable. Even if the pigment itself is not raised, spots visually emphasise unevenness in the skin's micro-relief by creating optical shadowing. Solar lentigines are the clearest example – they are not only darker than the surrounding skin but often look rougher too, as the epidermis also thickens.
DIAGNOSIS AND MONITORING
To determine the nature of pigment spots accurately, a careful medical history must be taken: sun exposure, any medicines or hormonal preparations taken and any procedures carried out. A clinical examination makes it possible to assess the overall condition of the skin, while a Wood's lamp, dermoscopy and various objective indices are used for more precise assessment. For example, the MASI scale is used to assess the severity of melasma, and photographs taken under consistent lighting help track treatment progress and objectively assess changes.
THE IMPORTANCE OF PREVENTION
Pigmentation is much easier to prevent than to treat, so prevention is a key step. Daily sun protection is essential – broad-spectrum sunscreens that protect against UVA and UVB rays are needed.
For melasma, tinted creams with iron oxides are particularly effective, as they also protect against visible blue light. Controlling inflammation is also essential: treating pimples or eczema in good time reduces the risk of post-inflammatory hyperpigmentation. Strengthening the skin barrier with moisturising emollients, niacinamide and antioxidants helps suppress micro-inflammation, which often stimulates melanin production.
THE IMPORTANCE OF DAILY CARE
Daily skin care is very important. The morning routine should include antioxidants – for example, a vitamin C or niacinamide serum – and sun protection with a tinted SPF. In the evening, the skin should be gently cleansed and treated with a retinoid or azelaic acid and, if necessary, a soothing emollient.
Mild acid peels can be done a few times a month if the skin tolerates them. Spot treatment with tranexamic acid helps lighten individual spots. Most importantly, avoid harsh procedures that can make pigmentation worse.
WHEN TO SEE A DOCTOR
You should see a specialist if pigment spots spread quickly, start to itch or hurt, or change in shape or surface, as this may indicate malignant processes. A medical consultation is also needed if products you have used yourself have had no effect after several months. Professional input is especially necessary before considering laser treatments or systemic tranexamic acid treatment.
Pigment spots result from a complex interaction between pigment, inflammation and photodamage, with a direct effect on both skin tone and texture. This is not just a cosmetic problem – it is an indicator of skin health, revealing how the body reacts to environmental influences and internal changes. Managing this condition effectively requires consistent prevention, gentle but regular brightening products and, if necessary, professional treatments. Only comprehensive care brings long-term results and keeps the skin healthy and bright-looking.
Our recommendation. For redness-prone, sensitive facial skin, choose Eubos Cool & Calm Anti-Redness CC Cream SPF 50 – it visibly conceals redness and protects against the sun.
SOURCES
- Postinflammatory Hyperpigmentation – StatPearls (NCBI Bookshelf)
- Postinflammatory hyperpigmentation: A comprehensive overview: Treatment options and prevention
- Melanin's Journey from Melanocytes to Keratinocytes: Regulation of Exocytosis, Internalization, Processing, and Polarization
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