Mela B3 Dark Spot Serum — Reddit Reviews
Updated September 6, 2026
10% niacinamide serum for hyperpigmentation with mixed results; can irritate sensitive skin.
What the community says
This serum combines 10% niacinamide targeting dark spots and uneven tone, often used in morning routines for pigmentation concerns. Some users see visible improvement over months, while others report irritation or no change. Not ideal for very sensitive or reactive skin types.
What this means for you
Backed by 25 threads from r/SkincareAddiction, r/30PlusSkinCare and 3 more.
Read the threads ↓What people love
- 10% niacinamide concentration targets hyperpigmentation effectively for some users
- Hydrating formula leaves a dewy finish appreciated by community members
- Can soothe sensitive skin without harsh reactions for some users
Watch out for
- Often ineffective for stubborn sun spots or melasma despite consistent use
- May cause burning sensation or irritation, particularly on sensitive skin
- Visible results typically require months of continuous use, sometimes combined with other treatments
Product details
Where to buy
Real Reddit threads — 35 mentions across 25 threads
La Roche-Posay Mela B3 Dark Spot Serum on Reddit, in one place — 25 threads from r/SkincareAddiction, r/30PlusSkinCare and 3 more, summarized.
“and la roche posay mela b3 every morning”
Positive
“My skincare routine is basically cleaning my face with micelar water, effaclar by la roche posay and biretix every other day at night, and la roche posay mela b3 every morning.”
Positive
“I wear sunscreen every day.”
Positive
“PM: Cleanser (La Roche-Posay Toleriane) → La Roche-Posay Mela B3 serum → La Roche-Posay Cicaplast Gel B5”
Positive
“Open to hearing if this is doing anything useful for the post-AK redness/damage, or if I should be adding/swapping something.”
Positive
“Anything you'd add to or change about my current routine, or anything you'd specifically make sure to ask my derm about at my next visit?”
Positive
“La Roche Posay Mela B3 serum, then wait at least 3 minutes for it to absorb/dry”
Positive
“My skin has had near-zero post-tret peeling since I've started this regimen”
Positive
“Gentle tips that have helped me while re-implementing tret into my PM regimen”
Positive
“La Roche posay mela B3 serum works wonders for dark spots ..... Good luck babe!”
Positive
“Does anyone know what these brown marks are under my eyes and how I can get rid of them?”
Positive
“Hi! Does anyone know what these brown marks are under my eyes and how I can get rid of them?”
Positive
“[La Roche Posay Mela B3 serum ]”
Mentioned
“Evening:”
Mentioned
“Some examples of products that may help:”
Mentioned
“3. La Roche Posay mela B3 serum (for dark spot correction)”
Positive
“My skincare routine tonight is as follows”
Positive
“Everything but the pair acne cream is apart of my normal routine so I will know if the pair is the thing making the difference.”
Positive
Dupes & Alternatives
Anua
Azelaic Acid Hyaluron Redness Soothing Serum
Better for Hyperpigmentation
3 shared traits
621 mentions
