Side-by-side comparison

Byoma Brightening Serum vs La Roche-Posay Mela B3 Dark Spot Serum

Both serums contain Niacinamide, but each adds something the other doesn't. Here's where they overlap and where they split.

1Shared hero active
Byoma
Brightening Serum
SerumBudgetMorning or evening
Dark SpotsDullnesssensitive

Tranexamic acid + niacinamide + ceramide serum at an unusually low price point for this combination. Genuinely effective for post-inflammatory pigmentation and melasma-prone skin — and gentler than vitamin C for many people.

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La Roche-Posay
Mela B3 Dark Spot Serum
SerumPremiumMorning or evening
Dark SpotsPost-Acne MarksDullness

A pigment-targeting serum built on Melasyl plus 10% niacinamide for stubborn dark spots and post-acne marks. A clinical-leaning brightening serum; results on melasma and PIH build slowly over weeks with diligent SPF.

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The verdict

Which should you choose?

Both contain Niacinamide. Byoma Brightening Serum adds Tranexamic Acid. La Roche-Posay Mela B3 Dark Spot Serum adds Melasyl. Pick the one whose extra matches what you're treating. Byoma Brightening Serum is the better fit for sensitive skin; La Roche-Posay Mela B3 Dark Spot Serum for post-acne marks. On price, Byoma Brightening Serum is the less expensive option (Budget versus Premium).

The overlap

What they share

This hero active appears in both formulas:

Niacinamide
The formulation

Ingredient stacks, side by side

Byoma Brightening Serum — top of the list

  • Water~50–80%
  • Propanediol~5–25%
  • Glycerin~3–10%
  • Niacinamide~2–6%
  • Tranexamic Acid~1.5–4%
  • Pentylene Glycol~1–2%
  • Butylene Glycol~1–2%

La Roche-Posay Mela B3 Dark Spot Serum — top of the list

  • Aqua~50–80%
  • Glycerin~5–25%
  • Niacinamide~3–10%
  • Melasyl~2–6%
  • Dimethicone~1.5–4%

● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.

At a glance

The specs

Byoma Brightening SerumLa Roche-Posay Mela B3 Dark Spot Serum
CategorySerumSerum
Price tierBudgetPremium
Best forDark Spots, Dullness, sensitiveDark Spots, Post-Acne Marks, Dullness
Usage notesMorning or eveningMorning or evening
Shared hero activesNiacinamide
Questions

Common questions

Is the Byoma Brightening Serum or the La Roche-Posay Mela B3 Dark Spot Serum better?
It depends on what you're treating. Both contain Niacinamide; Byoma Brightening Serum adds Tranexamic Acid; La Roche-Posay Mela B3 Dark Spot Serum adds Melasyl.
What's the difference between the Byoma Brightening Serum and the La Roche-Posay Mela B3 Dark Spot Serum?
Byoma Brightening Serum's hero actives are Tranexamic Acid and Niacinamide. La Roche-Posay Mela B3 Dark Spot Serum's are Niacinamide, Melasyl and Glycerin. They also sit in different price tiers (Budget versus Premium).
Are the Byoma Brightening Serum and La Roche-Posay Mela B3 Dark Spot Serum dupes for each other?
Partly. They share Niacinamide, but Byoma Brightening Serum's Tranexamic Acid and La Roche-Posay Mela B3 Dark Spot Serum's Melasyl aren't in the other, so they aren't full substitutes.
Can I use the Byoma Brightening Serum and La Roche-Posay Mela B3 Dark Spot Serum together?
Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.
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1 shared hero active

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