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✨ Unlock radiant, even skin—because your glow deserves the spotlight!
La Roche-Posay Mela B3 Serum is a dermatologist-backed, clinically proven dark spot corrector featuring a breakthrough Melasyl complex and potent 10% Niacinamide. Designed for all skin tones and types, this lightweight serum visibly reduces sun spots, age spots, and post-acne marks with long-lasting results, delivering a radiant, even complexion without irritation.










| ASIN | B0CM4B43DZ |
| Active Ingredients | Melasyl™, Niacinamide, salicylic_acid |
| Best Sellers Rank | #809 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #29 in Facial Serums |
| Brand | La Roche-Posay |
| Brand Name | La Roche-Posay |
| Customer Reviews | 4.4 out of 5 stars 13,404 Reviews |
| Global Trade Identification Number | 03337875890021 |
| Item Form | Drop |
| Item Volume | 30 Milliliters |
| Item Weight | 30 Grams |
| Manufacturer | Factory EU - France COSMETIQUE ACTIVE PRODUCTION |
| Manufacturer Part Number | LRMBSR30 |
| Material Features | Allergy Tested, Dermatologist Tested for Safety, Non-Comedogenic, Paraben Free, Sensitive Skin Tested |
| Material Type Free | Paraben Free, Soap Free |
| Model Number | LRMBSR30 |
| Number of Items | 1 |
| Product Benefits | Visibly corrects age spots, sunspots, liver spots, acne marks, uneven skin tone, dullness & lack of radiance. Product Benefits Visibly corrects age spots, sunspots, liver spots, acne marks, uneven skin tone, dullness & lack of radiance. See more |
| Recommended Uses For Product | Powered by Melasyl™, a new exclusive La Roch Posay ingredient, born from 18 years of research, and 10% Niacinamide. A first-of-its-kind discoloration serum to correct dark spots for brighter, radiant skin & long-lasting results |
| Scent | Scented |
| Scent Name | Scented |
| Skin Tone | All |
| Skin Type | All |
| Special Ingredients | 10% Niacinamide, Melasyl™ |
| Target Use Body Part | Face |
| Unit Count | 1.0 Fluid Ounces |
| Use for | Face |
A**A
Excellent
Here’s a clear and honest Amazon-style review based on the product in your image: ⸻ I’ve been using the La Roche-Posay Mela B3 Serum for a few weeks now, and overall I’m quite satisfied with the results. The texture is lightweight and absorbs quickly into the skin without feeling greasy or sticky, which makes it easy to layer with other products. One of the things I appreciate most is that it feels gentle on the skin. I didn’t experience any irritation or breakouts while using it, even on more sensitive areas. Over time, I’ve noticed a slight improvement in the appearance of dark spots and overall skin tone—it looks a bit more even and brighter. That said, the results are not instant. It takes consistency and patience to see visible changes, so if you’re expecting quick results, this might feel a bit slow. Also, the dropper works fine, but sometimes it doesn’t pick up a full amount of product. Overall, it’s a solid serum for anyone looking to gradually improve skin clarity and tone with a gentle formula. I would recommend it, especially if you prefer lightweight skincare that doesn’t feel heavy on the skin.
K**Z
“Spectacular results” Love it ❤️❤️
I have to share this with you!!!!!. This is my 5th bottle, and I can honestly say I’m beyond impressed with the results. At first, I had my doubts, but this product has truly exceeded my expectations. I’ve seen amazing improvements, especially on my décolletage area, which used to be one of my biggest insecurities. The appearance of dark spots and uneven tone has consistently improved over time, and my skin now looks much more even and radiant. I use it every night before going to bed, and on alternating days I also apply it in the morning, always followed by sunscreen. This routine has made a huge difference. The texture is silky and not sticky at all, and it has a very delicate, pleasant scent, which makes it even more enjoyable to use. If you’re dealing with sun spots or discoloration like I was, this product is definitely worth trying. I’m extremely happy with the results and will absolutely keep repurchasing!
L**P
My second bottle! Repurchased because it actually works on acne scars
This is my second time purchasing this serum, and I absolutely love it! I used to use the previous La Roche-Posay formula, but this new Mela B3 version is fantastic. It has noticeably improved the appearance of my skin and has done wonders for my past acne scars and dark spots. It’s gentle, absorbs beautifully, and delivers real results. If you are struggling with post-acne marks, this is worth every penny. Highly recommend
A**E
Lighten dark spots
Dermatoligist recommend, so I've been using for a few weeks two times a day. I haven't really noticed much, maybe a little lighter dark spots, that's why only 4 stars. It doesn't irritate my skin, not itchy or sticky. Just a few drops and it absorbs quickly. It does not protect against the sun or moisturize so after applying Mela B3 to clean skin you will need to apply moisturizer and sun screen, just as well because I like my brand now. I will continue to use it to 1-see if dark spots will lighten as promised and 2-to keep new ones from appearing.
K**N
Lightened dark spots. Did not totally remove.
Lighten my dark spots on my cheeks.
G**S
Super good for dark spots
I’ve been using this serum for several days now, and I really like it. It has a lightweight texture that absorbs quickly and doesn’t leave my skin feeling sticky, which is very important to me. I bought it mainly to help with dark spots, and little by little I’ve noticed my skin looks more even and smoother. It’s not an overnight miracle, but you can definitely see improvement with consistent use.
K**W
Unsealed and questionable!!
I'm so torn on this review. I LOVED the actual product when I've gotten it in the past. Unfortunately I'm too nervous to use this from Amazon. It arrived in an unsealed bottle in an unsealed box and looked used and half empty. I returned it for a replacement because gross. The second one that came also arrived unsealed and looking tampered with. I don't feel safe using it so I'll be returning the second one with no replacement. For a $60+ luxury product, this is sketchy and ridiculous. I tried to contact the seller and see if they are usually unsealed but the first one being half empty was just too questionable. The color doesn't even match my bottle from Ulta so definitely not putting this on my skin. :( Bummer.
M**J
Great serum, but pricey and runs out quickly
This item is great, but it is definitely pricey, and you go through the bottle pretty quickly. At first glance, the bottle looks like it contains a good amount, but it’s important to realize that it is only about 70% full and not filled to the top. That said, the consistency is really nice. It has a pink serum-like texture, and after using it for two months, I’ve noticed that it has helped my skin look more glowy and healthy. I would recommend it, but just keep in mind that it is expensive.
R**O
OK.
Bon produit, agréable na pique pas ma peau sensible mais efficacité il faut voir dans la durée, trop court pour juger les résultats. Un petit bémol: le carton d'emballage est arrivé éclaté. C'était pour moi donc pas grave mais si vous achetiez pour offrir ça peut poser des problèmes.
P**D
Great product to lessen hyperpigmentation
Effective product for dealing with hyperpigmentation. Remember to use your sunscreen to prevent further skin damage
A**A
Good
Nice
V**K
Super
Super
M**V
Un producto de 10. (Pero el envío ha sido penoso esta vez)
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.
Trustpilot
2 months ago
3 weeks ago