$44.99
In Stock
Eligible for registries and wish lists
At a glance
About this item
Additional product information and recommendations
Frequently bought together
$11.49 - $25.99
Buy 3, get 1 free on select beauty minis on select items
4.5 out of 5 stars with 4825 ratings
$8.99 - $19.99
Buy 3, get 1 free on select beauty minis on select items
4.7 out of 5 stars with 6928 ratings
Related Categories
Guests are saying
This serum has garnered attention for its effectiveness in reducing dark spots and evening skin tone. Many guests report visible improvements in their skin's appearance after consistent use, particularly for melasma and hyperpigmentation. The lightweight texture and pleasant scent enhance the application experience, making it a favorite among those seeking a reliable skincare solution. While results may vary, patience and regular use seem to be key for optimal outcomes.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.3 out of 5 stars with 1712 reviews
effectiveness: 3.05 out of 5
quality: 3.34 out of 5
value: 3 out of 5
47% would recommend
44 recommendations
1 out of 5 stars
25 January, 2026
originally posted on laroche-posay.us
No improvement on my hand after 4 months
I used the Mela B3 serum on one-half of one hand, twice a day, for more than 4 months. Toward the end, I started using it 3 times a day. There was no reduction in the color or size field of any spot or, if there was any improvement, it was so slight as to not be worth the time effort or money. I tried this product because it was offered as beneficial for hands in addition to faces.
1 reply from Consumer Care Center team - 2 days ago
Hi titian you for sharing your comments on the Mela B3 Dark Spot Serum With Melasyl™ + Niacinamide. Feedback from our consumers is very important to us and helps us improve all of our products! We apologize that you did not end up liking this product and appreciate you sharing your experience. We thank you for giving this product a try as we will be passing on your comments to others in our team. We hope you continue using our products !
1 out of 5 stars
19 January, 2026
originally posted on laroche-posay.us
Doesn’t works on a sensitive skin.
Im so sad this didn’t work for me. My skin got irritated with little bumps and I bought it because supposedly works with sensitive skin. I need an exchange for a different product or a refund, this product is expensive. Please advise.
1 reply from Consumer Care Center team - 4 days ago
Hello Fabbiana! We are very sorry to hear about your experience with our Mela B3 Dark Spot Serum With Melasyl™ + Niacinamide. We would like to speak to you directly about this. Please contact us at 800-560-1803 M-F 9:00 am – 7:00 pm ET for assistance and provide the reference #44883478. We look forward to speaking with you!
2 out of 5 stars
19 January, 2026
originally posted on laroche-posay.us
High disappointed
I am 21 days into using this product. Not much is needed but the product is almost gone. What I noticed is that ya'll deliberately us a thick purple bottle so you can't see the amount in the bottle. This is deceitful. This morning I placed the bottle to the natural sun light but couldnt see anything. When I turned the bottle upside down I was then able to see that the bottle is almost empty.
1 reply from Consumer Care Center team - 4 days ago
Hello KLW89! We appreciate you sharing your experience after three weeks of use, as your feedback is essential to our commitment to quality. The choice of an opaque, colored bottle is a deliberate scientific decision intended to protect the integrity of the active ingredients within, particularly Melasyl™ and Niacinamide, which can be sensitive to light exposure. By shielding the serum from UV rays and external light, we ensure the formula remains stable and as effective as possible for your skin from the first application to the last. Regarding the longevity of your serum, a helpful tip for such a concentrated formula is to use only three to four drops for the entire face and neck. This specific amount is designed to provide full coverage and optimal results while ensuring the bottle lasts for the intended duration of a typical treatment cycle.
5 out of 5 stars
18 January, 2026
originally posted on laroche-posay.us
So far so good
A lot of mixed reviews but I’m giving this a 5 star even though I just started it. But I’m not having any burning or stinging. The fragrance isn’t bothering my skin either. Smells bad but calms down after a bit. I only have some post acne marks I wanna get rid of I’ve had for ever but I can’t use vitamin c it irritates me, and I use niacinamide from the ordinary but that one is so strong and doesn’t lighten spots it just helps with an acne flare up. So I personally don’t like the ordinary. I decided to try this and so far so good. I want my skin to look more brighter and even toned that’s all I’m looking for so if anything changes I’ll update but so far so good:)
5 out of 5 stars
17 January, 2026
originally posted on laroche-posay.us
As effective as prescription
I purchased this for my 62 year old husband who experienced sunspots for the first time in his life. We were both astonished in the fading of discoloration in 3-4 weeks, not months! He had tried several other products in the past that promised benefits and didn’t deliver. I believe LaRoche is using a new patented ingredient in this. Excellent!!
1 out of 5 stars
14 January, 2026
originally posted on laroche-posay.us
Another skincare let down…Ineffective
Not a fan of the smell, it did not improve my dark spots at all. For the price, I expected visible results or at least some level of improvement. If you are dealing with real hyperpigmentation or stubborn marks, this is not worth your money. This felt like an expensive moisturizer with zero brightening or fading. Definitely not worth it.
1 reply from Consumer Care Center team - 6 days ago
Hello Tyh_! We are sorry to hear that the Mela B3 Dark Spot Serum did not meet your expectations, particularly regarding the scent and the results on your hyperpigmentation. While we carefully select fragrances for our formulas, we understand that scent is a very personal preference. When addressing stubborn dark spots and deep-seated marks, it is important to note that visible improvements typically require consistent, daily application over a period of at least eight to twelve weeks to coincide with the skin's natural regeneration process. To maximize the efficacy of the Melasyl™ and Niacinamide in the formula, we highly recommend pairing the serum with a broad-spectrum SPF 30 or higher every single morning, as even minimal UV exposure can trigger melanin production and counteract the brightening progress you are looking for. We appreciate your honest feedback on the value and experience of this treatment, as it helps us in our commitment to developing effective dermatological solutions for all skin concerns.
5 out of 5 stars
Thumbs up graphic, would recommend
13 January, 2026Verified purchase
Dark spots
Can see a difference already
3 out of 5 stars
12 January, 2026
originally posted on laroche-posay.us
May Worsen Hyperpigmentation For Some Users
I really wanted to like this product, but for my skin I experienced a dual effect where my hyperpigmentation got darker and some lightened. But mostly, my hyperpigmentation worsened after 3 weeks of use. Prior to the Mela B3 Serum, I was using Alpha Arbutin and made great progress, but I wanted to try something longer lasting. Unfortunately for me, it didn't work. As far as the product itself, it's very light and has a luxurious consistency with a pleasant smell. Glides pretty smoothly on skin. Overall, this product may work for some people and may not for others.
1 reply from Consumer Care Center team - 9 days ago
Hello mjbloo! We appreciate your detailed and honest feedback regarding your experience with the Mela B3 Dark Spot Serum. Hyperpigmentation is a complex concern, and while our Melasyl™ and 10% Niacinamide formula is designed to intercept excess melanin and even out skin tone, every skin type responds differently to various active ingredients. It is possible that your skin's transition from Alpha Arbutin to our Mela B3 formula caused a temporary shift in how your pigments are being processed or revealed as the skin's surface renews itself. Since you noticed some areas lightening and others appearing darker, it might be helpful to continue the process with a focus on consistent, daily sun protection, as UV exposure can sometimes make existing spots appear more prominent while a treatment is working. We are pleased you enjoyed the luxurious consistency and the application experience, but we understand the frustration of seeing a setback in your progress. Your insights are very valuable to us as we continue to study the diverse ways our innovative Melasyl™ technology interacts with different skin histories.
3 out of 5 stars
10 January, 2026
originally posted on laroche-posay.us
Consistent use with no results.
Didnt get the results desired results from one bottle
1 reply from Consumer Care Center team - 9 days ago
Hello TyLeft! We appreciate your feedback regarding the Mela B3 Dark Spot Serum. Addressing hyperpigmentation and persistent dark spots is a gradual process, as our Melasyl™ technology and high-concentration Niacinamide work by intercepting excess melanin before it reaches the skin's surface. While some initial improvements in skin radiance can often be seen within the first few weeks, the most significant and visible reduction in the appearance of dark spots typically occurs after eight to twelve weeks of consistent, twice-daily use. One bottle is a great start toward a more even complexion, but continuing into a second bottle often provides the cumulative effect needed for more transformative results. To support the serum's performance, we suggest ensuring you are applying a broad-spectrum sunscreen every morning, as UV exposure can counteract the brightening benefits of the serum. Your patience is an important part of the journey to clearer-looking skin.
5 out of 5 stars
10 January, 2026Verified purchase
(no review title)
Awesome product
3 out of 5 stars
9 January, 2026
originally posted on laroche-posay.us
Meh
It’s still too early to tell whether the product is effective. However, the scent is not very pleasant, and the bottle/dispenser design could be improved to minimize product wastage, which is disappointing considering the cost.
1 reply from Consumer Care Center team - 18 days ago
Hello TeeD! We appreciate your feedback and your patience as you evaluate the effectiveness of our Mela B3 Dark Spot Serum, as visible results typically manifest after eight weeks of consistent daily use. Regarding the scent and the dispenser, we take your comments seriously as we strive to provide a premium experience that matches the high performance of our Melasyl™ and Niacinamide formula. To minimize any product waste, we suggest applying the serum directly from the dropper onto your fingertips for a more controlled and targeted application, ensuring that this potent treatment is used as efficiently as possible.
4 out of 5 stars
8 January, 2026Verified purchase
(no review title)
heard very good things about this product excited to use. packaging was not great box was ripped and opened when i received it. hopefully everything else is good
5 out of 5 stars
8 January, 2026
originally posted on laroche-posay.us
It works
It works. I didn’t think it would but it did and I’m happy I tried.
5 out of 5 stars
8 January, 2026
originally posted on laroche-posay.us
Works
I have been using it for few weeks and it seems to be working for me.
5 out of 5 stars
5 January, 2026
originally posted on laroche-posay.us
Antionette
Love the serum my dermatologist noticed the improvement in dark spots
3 out of 5 stars
Thumbs down graphic, would not recommend
1 January, 2026Verified purchase
Aahh... so so
It did not reduce my dark spots or change anything with the texture of my skin.
1 reply from La Roche-Posay Product Expert team - 1 month ago
Hello MAVIS! Thank you for sharing your experience with our Mela B3 Dark Spot Serum with Melasyl and 10% Niacinamide. We are truly sorry to hear that you did not observe the reduction in dark spots or improvements in skin texture that you were hoping for. Your feedback is incredibly important to us, and we appreciate your honesty. The Mela B3 serum is formulated with our patented Melasyl™ ingredient and 10% Niacinamide, specifically designed to visibly reduce the appearance of persistent dark spots and prevent their re-appearance, while also improving overall skin tone and texture. We understand that individual skin responses to even the most advanced formulations can vary, and visible results often require consistent use over time as the skin's renewal process takes place. We are deeply committed to providing effective and high-quality skincare solutions, and your experience provides valuable insight as we continuously strive to develop products that meet the diverse needs of our customers.
2 out of 5 stars
29 December, 2025
originally posted on laroche-posay.us
Too early
I don’t think it’s been long enough for the product to have progressed in diminishing the dark pigmentation.
1 reply from Consumer Care Center team - 27 days ago
Hi Magnesium you for sharing your comments on the Mela B3 Dark Spot Serum With Melasyl™ + Niacinamide. Feedback from our consumers is very important to us and helps us improve all of our products! We apologize that you did not end up liking this product and appreciate you sharing your experience. We thank you for giving this product a try as we will be passing on your comments to others in our team. We hope you continue using our products !
3 out of 5 stars
29 December, 2025
originally posted on laroche-posay.us
I Keep Hoping
I have used this product for 2 weeks and my dark spots have not faded.
1 reply from Consumer Care Center team - 1 month ago
Hi Sherylg you for sharing your comments on the Mela B3 Dark Spot Serum With Melasyl™ + Niacinamide. Feedback from our consumers is very important to us and helps us improve all of our products! We apologize that you did not end up liking this product and appreciate you sharing your experience. We thank you for giving this product a try as we will be passing on your comments to others in our team. We hope you continue using our products !
5 out of 5 stars
28 December, 2025
originally posted on laroche-posay.us
Best serum
Dang. The best serum I have ever used. The moment I applied, it smoothed my skin and i felt like it was absorbed immediately.
2 out of 5 stars
28 December, 2025
originally posted on laroche-posay.us
Mela B3 Dark Spot Serum
I have used the Mela B Serum for 1 month and 5 days. I have Melasma on the forehead. There has been no significant improvement yet. I will keep trying for a few more weeks before looking for a different product.
1 reply from Consumer Care Center team - 1 month ago
Hi Paula B! Thank you for sharing your comments on the Mela B3 Dark Spot Serum With Melasyl™ + Niacinamide. Feedback from our consumers is very important to us and helps us improve all of our products! We apologize that this product did not give the results you were expecting overall and we appreciate you sharing your experience. We thank you for giving this product a try as we will be passing on your comments to others in our team. We hope you continue using our products !