Dark marks on melanin-rich skin: understanding pigmentation and caring for it gently

Melanin is not a flaw to be corrected. It is a sophisticated, protective feature of the skin, and most South African teens have it in abundance. Understanding how it works changes how you care for it. When skin is rich in melanin, the goal is not to strip pigment away or chase a lighter complexion. It is to keep the skin calm, balanced and even, so its natural tone can look its healthiest.

This matters because melanin-rich skin has specific needs. It responds differently to inflammation, to the sun and to harsh products than lighter skin does. Knowing the difference is the first step to caring for it well.

What melanin actually does

Melanin is the pigment that gives skin, hair and eyes their colour. It is made by specialised cells called melanocytes and comes in two main forms: eumelanin, which is brown to black, and pheomelanin, which is reddish-yellow. The balance between these two largely determines a person's skin tone.

Eumelanin, the dominant pigment in darker skin, is genuinely protective. It absorbs and scatters ultraviolet light and acts as an antioxidant, helping to shield skin cells from sun-related damage (Brenner and Hearing, 2008). This is one reason darker skin tones have a lower incidence of sun-induced skin cancers than lighter ones (Brenner and Hearing, 2008). Melanin is, in effect, the skin's original sunscreen.

That protection is real, but it is partial. Researchers estimate melanin provides only a modest natural sun protection factor, far below what a daily sunscreen offers (Brenner and Hearing, 2008). Melanin-rich skin still benefits from sun protection. It is supported by melanin, not fully covered by it.

Why dark marks appear after a breakout

The most common pigmentation concern for teens with melanin-rich skin is not acne itself, but the dark marks, or hyperpigmentation, that acne leaves behind. This is called post-inflammatory hyperpigmentation, or PIH. It shows up as flat brown, dark brown or grey patches in the exact spots where a pimple, scratch or irritation once was (Davis and Callender, 2010).

The mechanism is straightforward. When skin becomes inflamed, the inflammation signals melanocytes to produce extra melanin in that area. That pigment can settle in the upper layers of the skin and sometimes deeper (Maghfour et al., 2022). The result is a dark mark that lingers long after the original blemish has healed.

PIH affects all skin tones, but it appears more often, more intensely and for longer in melanin-rich skin (Mar et al., 2024). Marks can take months, and occasionally longer, to fade on their own (Davis and Callender, 2010). This is why so many teens feel their breakouts have “scarred” them, when in most cases the surface is healed and what remains is pigment that will settle with time and care.

Why gentle care matters more, not less

Because inflammation is what triggers these marks, the worst thing melanin-rich skin can experience is more inflammation. Harsh scrubs, high-strength actives, aggressive picking and over-washing all create the exact irritation that drives pigment production. In other words, trying to scrub a dark mark away usually makes it darker.

This is the heart of caring for melanin-rich skin: calm it, do not attack it. Two principles do most of the work.

Treat the breakout early and gently

Because PIH follows inflammation, the most effective way to prevent dark marks is to settle breakouts quickly and calmly, before they have a chance to leave a trace (Davis and Callender, 2010). Gentle, consistent care beats harsh, occasional intervention. Ingredients like niacinamide can help support a more even-looking tone as part of a balanced routine, without the irritation that aggressive treatments cause.

Protect from the sun, every day

Sun exposure deepens existing dark marks and slows their fading (Mar et al., 2024). For melanin-rich skin working through pigmentation, daily sun protection is one of the most important steps there is. It is not about preventing tanning. It is about giving existing marks the chance to fade and stay faded. Melanin offers a head start, but it is not enough on its own (Brenner and Hearing, 2008).

A simple, balanced approach

Melanin-rich skin does not need a complicated routine or a cupboard full of strong actives. It needs consistency and gentleness:

Cleanse gently. Remove oil and impurities without stripping the skin or disturbing its barrier.

Support the barrier. A lightweight, non-comedogenic moisturiser keeps skin comfortable and calm, which helps reduce the inflammation that drives pigment.

Even the tone, gently. Look for supportive ingredients like niacinamide rather than harsh, stripping treatments.

Protect daily. Sun protection during the day gives existing marks the space to fade.

Above all, give it time. Pigmentation fades gradually, in the same way breakouts settle gradually. Progress here is measured in weeks and months, not days, and consistency is what carries it.

When to seek professional advice

If pigmentation is widespread, deep, distressing or not improving with a gentle, consistent routine, it is worth speaking to a medically trained professional such as a dermatologist. They can assess the type of pigmentation and recommend appropriate, skin-safe options. There is no need to wait until marks feel overwhelming to ask for support.

Melanin-rich skin is protective, resilient and beautiful as it is. Cared for gently and consistently, it does not need to be corrected, only supported, so its natural tone can shine from within.

Frequently asked questions

What causes dark marks on melanin-rich skin?

Dark marks, known as post-inflammatory hyperpigmentation (PIH), appear when skin becomes inflamed and produces extra melanin in that spot. Acne, picking, irritation and sun exposure are the most common triggers. The mark can linger long after the original blemish has healed, and it tends to be more noticeable and longer-lasting in deeper skin tones.

How long do dark marks take to settle?

There is no overnight fix. With a gentle, consistent routine and daily sun protection, marks usually settle gradually over weeks to months as the skin rebalances. Deeper or older marks can take longer. Progress here is steady, not sudden, and consistency is what carries it.

Can you scrub dark marks away?

No, and scrubbing usually makes them worse. Harsh scrubs and aggressive treatments create the exact inflammation that triggers more pigment. Gentle care that calms the skin is far more effective than anything abrasive.

Do you need sunscreen if you have melanin-rich skin?

Yes. Melanin offers some natural protection, but not enough on its own. Sun exposure deepens existing dark marks and slows their fading, so daily sun protection is one of the most important steps for working through pigmentation.

When should you see a professional about dark marks?

If pigmentation is widespread, deep, distressing or not improving with a gentle, consistent routine, it is worth speaking to a medically trained professional such as a dermatologist, who can assess the type of pigmentation and recommend appropriate, skin-safe options.

References

Brenner, M. and Hearing, V.J. (2008) ‘The protective role of melanin against UV damage in human skin’, Photochemistry and Photobiology, 84(3), pp. 539–549. Available at: https://doi.org/10.1111/j.1751-1097.2007.00226.x (Accessed: 22 June 2026).

Davis, E.C. and Callender, V.D. (2010) ‘Postinflammatory hyperpigmentation: a review of the epidemiology, clinical features, and treatment options in skin of color’, The Journal of Clinical and Aesthetic Dermatology, 3(7), pp. 20–31. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC2921758/ (Accessed: 22 June 2026).

Maghfour, J., Olayinka, J., Hamzavi, I.H. and Mohammad, T.F. (2022) ‘A focused review on the pathophysiology of post-inflammatory hyperpigmentation’, Pigment Cell & Melanoma Research, 35(3), pp. 320–327. Available at: https://doi.org/10.1111/pcmr.13038 (Accessed: 22 June 2026).

Mar, K., Khalid, B., Maazi, M., Ahmed, R., Wang, O.J. and Khosravi-Hafshejani, T. (2024) ‘Treatment of post-inflammatory hyperpigmentation in skin of colour: a systematic review’, Journal of Cutaneous Medicine and Surgery, 28(6), pp. 596–604. Available at: https://doi.org/10.1177/12034754241265716 (Accessed: 22 June 2026).