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Understanding Dark Spots & Uneven Tone

Dark spots and uneven tone have many causes: acne marks, sun spots, melasma, freckles, friction or irritation, even some creams. Different causes need different care, so first work out which kind of mark it is. The goal is not to change your natural skin colour but to bring spots closer to the skin around them; no result is guaranteed.

Written by the Oliareen editorial teamDermatologist review: pendingLast updated: 6 November 2026How we write

What it is

Skin colour comes from melanin. Where more melanin is made or collects, a mark shows. In brown skin the pigment cells respond more strongly, so irritation or sun leaves marks more easily and for longer.

Healthy skin, not a different colour

Your natural skin colour is not a problem. This page is not about lightening skin; it is about calming spots and patches and keeping skin healthy. Creams that promise fast lightening often contain steroids or mercury, which cause long-term skin damage.

What can contribute

  • Marks after acne or irritation (PIH).
  • Sun: UV and visible light; years of sun leave sun spots (solar lentigines).
  • Melasma: hormones and sun.
  • Air pollution: studies link fine particles with pigmentation; Dhaka's air is among the world's most polluted.
  • Friction: neck, armpits, elbows.
  • Some medicines and creams.

What it can look like

Similar-looking marks can have different causes. These descriptions help you recognise patterns, not diagnose yourself.

  • Scattered, uneven marks at old spot sites: resembles post-acne marks.
  • Even patches on both cheeks or forehead: may resemble melasma.
  • Many small light-brown dots since childhood: resembles freckles.
  • Larger, sharp spots on sun-exposed areas with age: resembles sun spots.

Dark circles

Dark circles are not only about sleep. Inherited pigment, vessels showing through thin skin, shadows with age, allergies and eye rubbing all play a part. On brown skin, pigment is a common cause. Sleep, allergy control, not rubbing and sunscreen can help; evidence for creams is limited. Sudden swelling or darkening under one eye needs a doctor.

What not to assume

  • One cream will not suit every kind of mark.
  • Do not trust claims that marks will be wiped away permanently.
  • Looking uneven in a photo or light is not necessarily a problem; lighting changes a lot.

Common mistakes

  • Unknown "fairness" or "spot removal" creams.
  • Mark serums without sunscreen.
  • Several acids and vitamin C together, whose irritation creates new marks.
  • Rubbing lemon, raw potato or baking soda.

General skincare support

  • Daily sunscreen; in a one-year study sunscreen alone improved mottled pigmentation, from week 12.
  • A gentle routine; irritation means risk of new marks.
  • Cleansing at night to lift pollution and dust.
  • Choose one active, give it 12 weeks, then judge.

Ingredient evidence and limits

Each ingredient fits different causes, and most of the evidence comes from small studies. Measurable change rarely shows before 12 weeks.

  • Vitamin C: an antioxidant with some effect on pigment; can sting depending on the formula; does not replace sunscreen.
  • Niacinamide: may reduce pigment transfer to surface cells; moderate evidence.
  • Tranexamic acid and alpha-arbutin: act on pigment production; the EU caps alpha-arbutin at 2% in face products.
  • Azelaic acid: has evidence for acne marks and melasma.
  • AHA: lifts surface dead skin so tone can look more even; raises sun sensitivity, so sunscreen is essential.

When to see a dermatologist

  • You are not sure what kind of mark it is, especially even patches on both sides.
  • No change after 3 months of steady care.
  • Marks are spreading or upsetting you.

Simple routine

Morning

  1. 1
    Gentle cleanser, or just water

    If your face is not very oily after the night, water alone is fine in the morning.

  2. 2
    Light moisturiser (gel or lotion)

    Helps skin hold water; lighter textures feel better in the heat.

  3. 3
    Tinted sunscreen (iron oxides), every day

    Tinted sunscreen also blocks some visible light, which can deepen patches on brown skin.

Evening

  1. 1
    Gentle cleanser

    Lifts the day's sweat, dust and sunscreen; no scrubbing needed.

  2. 2
    One active for marks, started slowly

    Pick by cause; one at a time, patch test first.

  3. 3
    Light moisturiser (gel or lotion)

    Helps skin hold water; lighter textures feel better in the heat.

General education, not a diagnosis or treatment plan.

Questions people ask

How long does it take for dark spots to fade?

It depends on the cause. Acne marks fade over months to years; sun spots and melasma are more stubborn. Most ingredients need at least 12 weeks, and results do not last without daily sunscreen.

Does vitamin C work like sunscreen?

No. Vitamin C can help as an antioxidant under sunscreen, but it does not block UV. You still need sunscreen.

Do creams remove dark circles?

Evidence is limited. If the cause is pigment, sunscreen and gentle ingredients may help a little; if it is vessels or shadows, creams do very little.

Read next

Check it against your own skin

A few questions and a photo of your face tell you your skin type and which ingredients will work. Free.

Start the skin test

Sources

  1. DermNet — Postinflammatory hyperpigmentation
  2. Randhawa M et al. Daily use of a facial broad-spectrum sunscreen over one year. Dermatol Surg 2016
  3. EU Regulation 2024/996 (retinol and alpha-arbutin limits in face products)
  4. NHS — Moles (when to see a GP about a changing mole)
  5. WHO — Mercury in skin lightening products (WHO/CED/PHE/EPE/19.13, 2019)
  6. Khunger N et al. Pollution and skin pigmentation. Int J Dermatol 2025
  7. Mar K et al. Treatment of post-inflammatory hyperpigmentation: a systematic review. J Cutan Med Surg 2024