African woman comparing niacinamide and vitamin C serums for dark marks

Niacinamide vs vitamin C for dark marks

Niacinamide and vitamin C are two popular brightening ingredients that can help fade dark marks on melanin-rich skin in slightly different ways.

How niacinamide helps dark marks

Infographic showing how niacinamide calms and brightens dark marks on African skin

Niacinamide is a gentle, barrier-supporting ingredient that suits many skin types, including sensitive or acne-prone skin.

  • Helps reduce redness and calm irritation around spots.
  • Supports a stronger skin barrier over time.
  • Can gradually even out tone with consistent use.

How vitamin C helps dark marks

Vitamin C is an antioxidant that supports collagen and helps prevent new dark marks by limiting some pigment activity.

  • Targets dullness and lack of radiance.
  • Works well in the morning under sunscreen.
  • May feel more active or tingly on sensitive skin.

Using them in a Justine routine

Many brightening serums combine multiple ingredients, so you do not have to choose just one.

Always patch test new brightening products on a small area for a few days before applying them all over, especially if your skin is reactive or you have a history of eczema.

When to see a doctor

Stop using brightening products and seek medical advice if you develop severe stinging, swelling, hives, or eczema flares, or if dark spots, dark marks, or hyperpigmentation on African skin in South Africa suddenly spread or change in colour.

Educational only. Not medical advice. Stop using any product that makes your skin very irritated, painful, or swollen, and see a doctor or dermatologist for serious, spreading, or persistent concerns.

Routine steps

Diagram showing where niacinamide and vitamin C fit in the dark mark routine
  1. Cleanse gently to avoid stripping the barrier.
  2. Brighten with a serum; use targeted corrector only on stubborn marks.
  3. Moisturise to keep skin comfortable.
  4. Protect every morning with SPF 30-50.

Common mistakes

  • Layering too many strong actives on sensitive areas.
  • Skipping sunscreen after adding brightening products.
  • Swapping products too quickly to “speed up” fading.

Looking for routines? See the morning routine and night routine. For reassurance, read the trust and results page.

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