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✨ Glow Beyond Spots – Because flawless skin waits for no one!
La Roche-Posay Mela B3 Serum is a dermatologist-developed, multi-patented hyperpigmentation treatment featuring 10% Niacinamide and Melasyl technology. Clinically proven to reduce dark spots in 94% of users within 12 weeks, this lightweight, hypoallergenic gel-serum is designed for sensitive skin and effectively fades post-acne marks while preventing new pigmentation for a visibly even complexion.










| ASIN | B0CM4B43DZ |
| ASIN | B0CM4B43DZ |
| Benefits | Corrects dark spots, even persistent ones. Evens skin tone. Anti-recurrence efficacy for lasting results. |
| Best Sellers Rank | 1,475 in Beauty ( See Top 100 in Beauty ) 1 in Face Night Care Serums & Fluids |
| Brand Name | La Roche-Posay |
| Country Of Origin | France |
| Country of origin | France |
| Customer Reviews | 4.2 4.2 out of 5 stars (12,725) |
| Customer reviews | 4.2 4.2 out of 5 stars (12,725) |
| Date First Available | 26 Mar. 2024 |
| Global Trade Identification Number | 03337875890021 |
| Is discontinued by manufacturer | No |
| Item Form | serum |
| Item Volume | 30 Millilitres |
| Item Weight | 30 Grams |
| Item model number | LRMBSR30 |
| Manufacturer | La Roche Posay |
| Manufacturer | La Roche Posay |
| Manufacturer Part Number | LRMBSR30 |
| Model Number | LRMBSR30 |
| Number of Items | 1 |
| Product Dimensions | 3.55 x 5.5 x 10.9 cm; 30 g |
| Recommended Uses For Product | Apply 3-4 drops morning and/or evening to face & after cleansing. Always complete morning routine with daily SPF. |
| Skin Tone | All |
| Skin Type | All |
| Target Use Body Part | Face |
| Unit Count | 30.0 millilitre |
W**E
It works.
Great for reducing dark pigmentation areas on skin, good for sun blemishes.
V**Y
Nice product
Work well with the product
A**M
The real deal affordable dark spot treatment
If you prioritize something with a cute package and irresistible scent this is not your serum. However if you struggle with dark spots on your skin/melasma this serum is definitely a helper with guaranteed improvements. It’s not a miracle maker but since I started using it 2x day some of my dark spots lit up or reduced size. More importantly - had no other dark spots appearing on my face since!!! It smells and has the texture of a treatment product- it’s not fragrant at all and if applied in excess will create a yellowish paste on the skin. However if well applied and spread on the skin before your moisturizer none of this will happen. I was quite faithful to caudalie’s vinoperfect serum (has an equivalent cost) but this one, in results definitely makes la roche posay in the lead of anti-pigmentation skincare.
C**N
Good
I had some scars on my face. It did work after few uses. I only used one bottle. Then I used something else to get rid of my scars. But this works
L**A
Great quality and gives you great results
The product lasted me over two months using it twice a day. It did improve the texture of my skin making it look a lot softer! I think it contributed to reducing my pores. It didn't help that much to remove small areas of melasma, but I guess I will need a stronger product for it. I would say it is worth to buy but I also think there's other brands out there you can get for less and gives you the same result. If I can get it with discount I will get if again for sure!!
B**S
It’s open no sealed sticker at all
It wasn’t sealed.
A**R
Requires more time for evaluation.
Easy to use - but so far no apparent difference visible regarding hyperpigmentation. See review of La Roche-Posay cleanser already submitted.
M**J
Amazing on dark spots.
It worked well which I didn’t expected.
P**D
Effective product for dealing with hyperpigmentation. Remember to use your sunscreen to prevent further skin damage
A**A
Nice
M**O
I’ve always been quite skeptical about cosmetic products — they often seem to promise more than they actually deliver. However, my experience with the Mela B3 Serum has been surprisingly positive. I’ve had melasma since the birth of my daughter, more than ten years ago, so I don’t expect it to disappear overnight with just one product. After about 30 days of consistent use, I noticed — and confirmed through photos — that the darker spots became slightly lighter, and some of the lighter ones have partially faded. I use the serum twice a day (morning and night), after cleansing my face with La Roche-Posay Purifying Wash, followed by sunscreen, which I reapply throughout the day. I plan to keep using it and hope to see even better results over time. I believe this is the kind of product that shows its best effects with long-term use and careful sun protection. It’s also worth mentioning that I have rosacea, which had recently flared up quite badly. Since starting Mela B3 Serum, my rosacea has improved significantly — I’d say by around 70%. The redness, affected area, discomfort, and itching have all decreased noticeably. Overall, I’ve seen a remarkable improvement in my rosacea.
M**V
Compré este producto en octubre del 2025 y lo he vuelto a comprar (aunque esta vez me llegó chafado). Pongo cinco estrellas porque el producto las merece. Pero añado las imágenes de cómo me ha llegado esta vez. En fin, la dermatóloga me recomendó este sérum en concreto porque después del verano tenía manchas solares en el rostro. Y porque la Niacinamida tiene más propiedades de lo que creemos: Despigmentante, poros, rojeces Después de tres meses y medio utilizando este sérum, las manchitas se han difuminado más o menos en un 50%. Puede parecer poco, pero hay que tener en cuenta que comencé a aplicármelo poco a poco, porque este sérum contiene un 10% de Niacinamida, que es bastante si no estás acostumbrada... aunque haya despigmentantes más potentes. Comencé 1-2 noches por semana, y ahora me lo aplico 3-4. Incluso lo combino con el limpiador. ¡Voy subiendo en intensidad antes de que llegue el verano! Por qué me gusta 1. La Niacinamida es un componente que ahora incluyen muchos productos. Es despigmentante, antioxidante, actúa sobre el sebo y los poros, refuerza la barrera cutánea, actúa sobre las rojeces... Yo combino o alterno este sérum con Vitamina C y Retinol. Funcionan de manera distinta 2. Otra razón por la que me gusta este sérum es por su segundo componente, el Melasyl. Este es un activo patentado por L'Oréal y lo veréis en otros productos que parecen otras marcas pero pertenecen a L'Oréal, como por ejemplo, Vichy. Lo que hace el Melasyl, dicho así en bruto y sin entrar en tecnicismos es que no inhibe la producción de melanina, sino que evita que se formen manchas. Si utilizáis despigmentantes, sabréis que hay muchos activos que son más potentes, como el ácido kójico, azelaico etc. Estos inhiben directamente la producción de la melanina. El Melasyl, que tiene muchas búsquedas en Internet, dicen que es una de las moléculas eficaces para despigmentación y prevenir manchas. ¡Veremos lo de prevenir! 3. Incluye más componentes, como por ejemplo, un derivado del ácido salicílico, que es más suave que el ácido salicílico y cuya función es exfoliar suavemente, mejorar textura de la piel y complementarse con la Niacimamida y el Melasyl. 4. También incluye un retinoide suave, para mejorar la textura de la piel poco a poco y mantener la piel joven y elástica. 5. Y como no, también contiene agua termal. ¡Un clásico de La Roche Posay que calma la piel! En definitiva, es un sérum muy completo que puede aplicarse tanto de día como de noche y que no sólo elimina manchas, también las previene y mejora el estado de la piel. Con este frío, noto mucho los días en que no me aplico el sérum. Qué no me ha gustado: Como ya he comentado al principio, la caja vino chafada, como si alguien la hubiese abierto. Y además, el producto viene bocabajo. Parece más una devolución de alguien que lo ha vuelto a meter torpemente en la caja que un producto nuevo. Es la primera vez que me sucede y espero que la última. No se puede entregar un producto así, y menos un producto de cuidado de la piel. Es más, no quiero que me lo cambien. Directamente, me iré a la farmacia. Incluyo fotos del producto bueno, que se me está agotando, y fotos del producto "nuevo" que me ha llegado.
T**9
I am so down bad for this freaking serum. It fixed like 90% of my skin problems. If you are thinking about buying this ans haven’t used niacinamide before, don’t start with this one, start with a lower percentage (around 5%) to make sure it doesn’t completely purge and ruin your skin. Initially it might have this effect but it works its magic afterwards. Amazing for people who have dark spots. Makes skin super smooth, soft and shiny. Bit of a strange smell but no issues there. Love love love this serum and will be using it for the rest of my life
Trustpilot
5 days ago
3 weeks ago