Anua Niacinamide 10% + TXA 4% vs La Roche-Posay Mela B3 Serum: Which Is Better for Dark Spots, Acne Marks & Hyperpigmentation?
Two viral dark spot serums, but two very different approaches. Anua combines 10% niacinamide, 4% tranexamic acid and 2% arbutin in a Korean brightening formula, while La Roche-Posay Mela B3 pairs 10% niacinamide with Melasyl™ in a French pharmacy serum for persistent discoloration.
This comparison will help you choose the better serum for post-acne marks, sun spots, uneven skin tone, visible pores and stubborn hyperpigmentation.
⚡ Quick Answer
Choose Anua Niacinamide 10% + TXA 4% Dark Spot Correcting Serum if your main concerns are post-acne marks, uneven tone, enlarged-looking pores and dullness—and you want a more affordable K-beauty formula.
Choose La Roche-Posay Mela B3 Serum if you want a dermatologist-inspired pharmacy serum for persistent dark spots, sun-related discoloration and a broader hyperpigmentation routine.
The simplest difference: Anua offers a high-strength combination of TXA, niacinamide and arbutin. Mela B3 uses niacinamide with the patented Melasyl™ ingredient for a more pharmacy-focused approach to persistent pigmentation.
🏆 Quick Comparison Table
| Category | Best Choice | Why |
|---|---|---|
| Post-Acne Marks | 🏆 Anua | TXA, niacinamide and arbutin create a highly targeted brightening combination |
| Persistent Dark Spots | 💜 Mela B3 | Melasyl™ gives the formula a strong hyperpigmentation-focused position |
| Sun Spots | 💜 Mela B3 | Better suited to a structured pharmacy routine for persistent discoloration |
| Visible Pores | ✨ Anua | The high-niacinamide formula also targets dullness and enlarged-looking pores |
| Uneven Skin Tone | ⭐ Tie | Both are designed to improve the appearance of discoloration and uneven tone |
| Best Value | 💰 Anua | Usually offers a lower entry price for a multi-active formula |
| Pharmacy Skincare | 🏆 Mela B3 | Better fit for users who prefer European dermocosmetic brands |
| K-Beauty Routine | 🌸 Anua | Fits naturally into lightweight Korean skincare routines |
| Best Overall | ⭐ Depends | Anua for post-acne marks and value; Mela B3 for persistent pigmentation |
🌸 Anua Niacinamide 10% + TXA 4% Dark Spot Correcting Serum
Anua Niacinamide 10% + TXA 4% Serum is the more active-heavy K-beauty option. Its formula combines 10% niacinamide, 4% tranexamic acid and 2% arbutin to improve the appearance of dark spots, post-acne marks, dullness and uneven-looking skin.
This is the serum I would choose when pigmentation appears mainly after blemishes and the user also wants help with visible pores and overall radiance.
✅ Best For
- Post-acne marks and PIH
- Dull or uneven-looking skin
- Visible pores
- Oily or combination skin
- K-beauty routines
- People seeking strong value
⚠️ Not Ideal If
- Your skin reacts to high niacinamide concentrations
- Your barrier is irritated or peeling
- You already use several brightening actives
- You want a minimal formula with fewer targeted ingredients
Pros
- 10% niacinamide
- 4% tranexamic acid
- 2% arbutin
- Strong post-acne mark positioning
- Targets pores and dullness alongside discoloration
- Competitive price
Cons
- May be too active for highly reactive skin
- High niacinamide may cause flushing or irritation in some users
- Using too much may make layering feel sticky
💜 La Roche-Posay Mela B3 Intense Anti-Dark Spot Serum
La Roche-Posay Mela B3 Serum is the more pharmacy-focused option. It combines 10% niacinamide with Melasyl™, an ingredient developed to intercept excess melanin before it creates visible discoloration.
The serum is positioned for persistent dark spots, post-acne marks, sun-related pigmentation and uneven tone across different skin types and tones.
✅ Best For
- Persistent dark spots
- Sun spots and uneven tone
- Post-acne marks
- Different skin tones
- Users who prefer French pharmacy skincare
- A structured pigmentation routine
⚠️ Not Ideal If
- You want tranexamic acid or arbutin specifically
- You want the lowest-cost option
- Your skin cannot tolerate 10% niacinamide
- You expect one serum to correct pigmentation without daily SPF
Pros
- Contains Melasyl™
- Includes 10% niacinamide
- Targets persistent pigmentation
- Suitable for multiple skin types and tones
- Non-comedogenic positioning
- Easy to combine with the wider Mela B3 range
Cons
- More expensive than Anua
- Does not contain TXA or arbutin
- May still irritate users sensitive to high-dose niacinamide
🔬 Anua vs Mela B3: The Main Difference
Anua uses a combination of three widely recognized brightening ingredients: niacinamide, tranexamic acid and arbutin.
Mela B3 combines the same 10% niacinamide concentration with Melasyl™, creating a more proprietary pharmacy approach to persistent hyperpigmentation.
The real question is: do you prefer a multi-active K-beauty serum or a patented pharmacy formula for persistent dark spots?
🧪 TXA + Arbutin vs Melasyl™
Tranexamic acid is commonly included in cosmetic routines targeting uneven tone and post-inflammatory discoloration. Anua combines it with arbutin and niacinamide rather than relying on one hero ingredient.
Melasyl™ is La Roche-Posay’s patented ingredient designed to intercept excess melanin precursors before they mark the skin. In Mela B3, it works alongside 10% niacinamide.
One approach is not automatically stronger. The better formula depends on tolerance, consistency, the type of pigmentation and the rest of your routine.
🧴 Texture & Finish
Anua Texture
Lightweight and slightly viscous, with a smooth serum finish. A few drops spread easily, although applying too much may leave a slightly tacky layer.
Mela B3 Texture
Fluid, lightweight and easy to distribute across the face, neck and décolleté. It absorbs comfortably beneath moisturizer and sunscreen when used sparingly.
🌑 Which Is Better for Post-Acne Marks?
Anua has a slight advantage for blemish-related discoloration.
The combination of TXA, arbutin and 10% niacinamide makes it particularly attractive for users whose dark marks remain after acne has healed.
Mela B3 is also officially positioned for post-acne marks and may be preferable when discoloration appears alongside more persistent or sun-related pigmentation.
☀️ Which Is Better for Sun Spots?
Mela B3 is the stronger match for persistent sun-related discoloration.
Its Melasyl-based positioning and pharmacy pigmentation range make it a logical choice for established dark spots and uneven tone caused by cumulative UV exposure.
Neither serum can work optimally without consistent broad-spectrum sunscreen.
🌿 Which Is Better for Sensitive Skin?
Both products contain 10% niacinamide, so neither should automatically be considered ultra-gentle for every reactive skin type.
Anua has a more complex brightening combination, while Mela B3 is dermatologically tested and designed for broad skin-type suitability. Still, individual tolerance varies.
Start every other day or several times weekly if your skin is sensitive, and increase only when the skin remains comfortable.
☀️ Sunscreen Is Essential
Daily broad-spectrum SPF is non-negotiable when treating dark spots.
UV exposure can deepen existing pigmentation, slow visible improvement and trigger new marks. Apply sunscreen every morning and reapply during prolonged outdoor exposure.
👤 Who Should Buy Which Serum?
Buy Anua Niacinamide 10% + TXA 4% if:
- Your main concern is post-acne marks
- You also want help with visible pores
- You specifically want tranexamic acid and arbutin
- You enjoy Korean skincare
- You want the more affordable option
Buy La Roche-Posay Mela B3 if:
- Your dark spots are persistent
- You also have sun-related discoloration
- You prefer pharmacy skincare
- You specifically want Melasyl™
- You want a complete pigmentation-focused range
👩⚕️ Pharmacist’s Perspective
These are true competitors because both contain 10% niacinamide and target dark spots, but their supporting actives create different strengths.
Anua is the more attractive option for a younger, blemish-prone user dealing mainly with post-acne marks, pores and uneven tone.
Mela B3 makes more sense for persistent pigmentation, sun spots or users who prefer a dermatologist-inspired pharmacy routine.
The best choice is the formula your skin tolerates and that you can use consistently for several weeks alongside daily sunscreen.
🏁 Final Verdict
🌸 Best for Post-Acne Marks, Pores & K-Beauty Value: Anua Niacinamide 10% + TXA 4%
💜 Best for Persistent Dark Spots, Sun Damage & Pharmacy Skincare: La Roche-Posay Mela B3 Serum
