La Roche-Posay Retinol B3 Anti-wrinkles Anti-Ageing Serum With Retinol And Vitamin B3 Suitable For Sensitive Skin 30ml vs La Roche-Posay Mela B3 Serum, Dark Spot Corrector With Anti-Aging Melasyl + 10% Niacinamide, Discoloration Correcting Serum for Sun Spots, Age Spots & Post-Acne Marks, Long-Lasting Results, 30ML
Side-by-side comparison of scores, ingredients, prices and real customer feedback for La Roche-Posay Retinol B3 Anti-wrinkles Anti-Ageing Serum With Retinol And Vitamin B3 Suitable For Sensitive Skin 30ml and La Roche-Posay Mela B3 Serum, Dark Spot Corrector With Anti-Aging Melasyl + 10% Niacinamide, Discoloration Correcting Serum for Sun Spots, Age Spots & Post-Acne Marks, Long-Lasting Results, 30ML.
Last verified: 07 Apr 2026 · Based on 23 reviews
La Roche-Posay Retinol B3 Anti-wrinkles Anti-Ageing Serum With Retinol And Vitamin B3 Suitable For Sensitive Skin 30ml scores 77.0/100 vs La Roche-Posay Mela B3 Serum, Dark Spot Corrector With Anti-Aging Melasyl + 10% Niacinamide, Discoloration Correcting Serum for Sun Spots, Age Spots & Post-Acne Marks, Long-Lasting Results, 30ML at 75.0/100. La Roche-Posay Retinol B3 Anti-wrinkles Anti-Ageing Serum With Retinol And Vitamin B3 Suitable For Sensitive Skin 30ml wins on effectiveness, texture experience, value for money. La Roche-Posay Mela B3 Serum, Dark Spot Corrector With Anti-Aging Melasyl + 10% Niacinamide, Discoloration Correcting Serum for Sun Spots, Age Spots & Post-Acne Marks, Long-Lasting Results, 30ML is stronger on skin compatibility.
Which is better: La Roche-Posay Retinol B3 A... or La Roche-Posay Mela B3 Seru...?
La Roche-Posay Retinol B3 edges ahead with a slightly higher overall score (77 vs 75) and better value rating, making it the stronger pick for general anti-ageing. Choose Mela B3 if your priority is fading post-acne marks or sun spots — its 10% niacinamide and proprietary Melasyl molecule directly target pigmentation in a way retinol cannot.
— AIScored Editorial Team
How Do the Scores Compare?
La Roche-Posay Retinol B3 A...
|
La Roche-Posay Mela B3 Seru...
La Roche-Posay
|
|
|---|---|---|
| Overall Score | 77.0 | 75.0 |
| Effectiveness |
73.0/100
Best
|
72.0/100 |
| Ingredient Quality |
81.0/100
Best
|
81.0/100
Best
|
| Skin Compatibility | 79.0/100 |
82.0/100
Best
|
| Texture & UX |
82.0/100
Best
|
76.0/100 |
| Value for Money |
68.0/100
Best
|
64.0/100 |
| Best Price |
£36.00
Amazon UK →
Cheapest
|
£36.00
Amazon UK →
Cheapest
|
| Form | N/A | N/A |
| Dose | N/A | N/A |
| Third-Party Tested | ✗ No | ✗ No |
| Reviews Analysed | 12 | 11 |
La Roche-Posay Retinol B3 Anti-w...
Pros
- ✓Retinol + niacinamide combination is clinically supported — niacinamide buffers irritation and adds independent anti-aging, brightening, and barrier-repair benefits
- ✓Multiple users with sensitive skin report good tolerance with minimal irritation or purging
- ✓Lightweight serum texture absorbs quickly without heaviness or greasiness
- ✓Visible improvement in skin texture, smoothness, and fine lines reported within 1–4 weeks
Cons
- ✗No INCI list provided — cannot confirm retinol % or verify absence of fragrance/alcohol; some LRP serums contain small amounts of alcohol denat
- ✗Limited efficacy for hyperpigmentation and blemishes per user reports — retinol primarily targets texture and fine lines, not post-inflammatory pigmentation
- ✗30ml bottle at premium price point offers a relatively short supply for daily/nightly users
- ✗One counterfeit product report noted via Amazon marketplace — unsealed, discoloured product caused breakouts (a marketplace integrity issue, not a formulation issue)
Best For
La Roche-Posay Mela B3 Serum, Da...
Pros
- ✓10% Niacinamide is a high, clinically validated concentration for brightening, pore minimisation, and barrier support
- ✓Melasyl (proprietary LRP molecule) targets melanin transfer — a mechanism distinct from most over-the-counter brighteners, adding genuine differentiation
- ✓Multiple reviewers confirm visible improvement in sun spots and post-acne marks within 4–12 weeks of consistent use
- ✓Lightweight, fast-absorbing texture layers well under moisturiser and SPF without pilling or stickiness
Cons
- ✗Results for true melasma are modest — users with chronic or hormonal melasma report only partial fading and may need prescription actives (tretinoin, tranexamic acid)
- ✗Overapplication causes a yellowish residue on skin — characteristic of high-percentage Niacinamide and can be off-putting
- ✗Distinctive non-cosmetic scent (raw ingredient odour noted) may be unpleasant for fragrance-sensitive users
- ✗Premium price point: some reviewers note comparable results may be achievable with lower-cost Niacinamide serums, reducing perceived value
Best For
What does the data say about La Roche-Posay Retinol... vs La Roche-Posay Mela B3...?
Both serums cost £36 and share the same ingredient quality score of 81/100, but they do fundamentally different things. The Retinol B3 pairs retinol with vitamin B3 (niacinamide) to target fine lines and uneven texture — retinol accelerates cell turnover while niacinamide helps reduce the irritation that often comes with it. The Mela B3 drops retinol entirely and instead combines a high 10% niacinamide concentration with Melasyl, a proprietary molecule that targets melanin transfer at a cellular level — a mechanism you won't find in most high-street brighteners.
If your main concern is fine lines, dullness, or texture — particularly if you have sensitive skin — the Retinol B3 (77/100) is the more appropriate starting point. The niacinamide buffer makes retinol more approachable for those who've previously found it irritating. If dark spots, post-acne marks, or sun damage are the priority, the Mela B3 (75/100) is purpose-built for that, with reviewers reporting genuine fading in four to twelve weeks.
Worth noting: neither product has third-party testing, and the Retinol B3 lacks a published INCI list — you can't confirm the retinol percentage or check for alcohol denat. The Mela B3's 10% niacinamide can leave a slight yellowish residue if you apply too generously, so a thin layer is advisable.
La Roche-Posay Retinol B3 is a stabilised retinol serum pairing a moderate-strength retinol (estimated 0.3%) with niacinamide (Vitamin B3) — a well-evidenced combination that allows retinol to address fine lines and texture while niacinamide buffers potential irritation, strengthens the barrier, and adds brightening benefits.
What are the key differences?
Frequently Asked Questions
Which is better, La Roche-Posay Retinol B3 Anti-wrinkles Anti-Ageing Serum With Retinol And Vitamin B3 Suitable For Sensitive Skin 30ml or La Roche-Posay Mela B3 Serum, Dark Spot Corrector With Anti-Aging Melasyl + 10% Niacinamide, Discoloration Correcting Serum for Sun Spots, Age Spots & Post-Acne Marks, Long-Lasting Results, 30ML? ▼
Is La Roche-Posay Retinol B3 Anti-wrinkles Anti-Ageing Serum With Retinol And Vitamin B3 Suitable For Sensitive Skin 30ml worth the price compared to La Roche-Posay Mela B3 Serum, Dark Spot Corrector With Anti-Aging Melasyl + 10% Niacinamide, Discoloration Correcting Serum for Sun Spots, Age Spots & Post-Acne Marks, Long-Lasting Results, 30ML? ▼
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What the Data Says
Retinol vs retinaldehyde: which actually scores higher?
Retinaldehyde leads by 17.2 points on effectiveness. Across 42 retinol/retinoid products we scored, the 3 retinaldehyde products average 78.3 on effectiveness versus 61.1 for 31 retinol products.
The retinaldehyde products in our database:
- Naturium Retinaldehyde Cream Serum 0.05% — 80 effectiveness, 83 overall
- Paula's Choice CLINICAL Pro Retinaldehyde — 74 effectiveness, 64 overall
- Medik8 Crystal Retinal 3 — 81 effectiveness, 79 overall (uses retinaldehyde despite the name)
All three beat the retinol average on effectiveness. The biological reason: retinaldehyde sits one conversion step closer to retinoic acid, the form your skin actually uses. Retinol requires two conversions; retinaldehyde requires one.
The honest caveat: 3 products is a small sample. The gap is wide enough to take seriously, but we'd want more retinaldehyde products on the market before calling it definitive. For now, the data favours retinaldehyde — but your options are limited.
Why do most retinol products score below average?
31 retinol products average 61.1 on effectiveness. Most land in mediocre territory. The molecule works — but the average product doesn't deliver it well.
The top retinol performers prove it can be done right:
- Paula's Choice CLINICAL 1% Retinol — 82 effectiveness, 76 overall
- Indeed Labs Retinol Reface — 80 effectiveness, 75 overall
- The Ordinary Retinol 0.5% in Squalane — 75 effectiveness, 74 overall
Three factors separate winners from the rest:
- Concentration. Products with clearly stated, meaningful percentages (0.5%–1%) score higher. Many products list retinol without disclosing how much.
- Stability. Retinol degrades with light and air exposure. Good packaging (airless pumps, opaque tubes) and encapsulation technology keep the molecule intact.
- Supporting ingredients. Top scorers pair retinol with stabilisers, squalane, or delivery systems that protect it until it reaches your skin.
The average retinol product fails on one or more of these. A retinol label doesn't guarantee results — the formulation behind it determines whether you're getting active retinol or degraded filler.
Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.
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