---
title: La Roche-Posay Mela B3 Dark Spot Serum
entity_type: Product
canonical_url: https://skinknowledgebase.com/products/la-roche-posay-mela-b3-dark-spot-serum
date_modified: 2026-05-18
date_reviewed: 2026-05-18
mcp_eligible: true
summary: La Roche-Posay Mela B3 Dark Spot Serum is a facial serum with Melasyl, 10% niacinamide, glycerin, sodium hyaluronate, and fragrance-disclosure formula notes.
main_concern:
  title: Facial Hyperpigmentation
  url: https://skinknowledgebase.com/concerns/facial-hyperpigmentation
key_ingredients:
  - title: Melasyl
    url: https://skinknowledgebase.com/ingredients/melasyl
  - title: Niacinamide
    url: https://skinknowledgebase.com/ingredients/niacinamide
  - title: Hyaluronic Acid
    url: https://skinknowledgebase.com/ingredients/hyaluronic-acid
cost: {"currency":"USD","checked_at":"2026-05-18","single_unit":44.99}
retail_url: https://www.laroche-posay.us/our-products/face/face-serum/mela-b3-dark-spot-serum-with-melasyl-niacinamide-melab3serum.html
evidence_sources:
  - title: AAD — How to fade dark spots in darker skin tones
    canonical_citation_url: https://skinknowledgebase.com/sources/aad-fade-dark-spots-darker-skin-tones
    original_source_url: https://www.aad.org/public/everyday-care/skin-care-secrets/routine/fade-dark-spots
    source_type: other
  - title: DermNet — Postinflammatory hyperpigmentation
    canonical_citation_url: https://skinknowledgebase.com/sources/dermnet-postinflammatory-hyperpigmentation
    original_source_url: https://dermnetnz.org/topics/postinflammatory-hyperpigmentation
    source_type: medical_reference
  - title: Target Product Page — La Roche-Posay Mela B3 Dark Spot Serum
    canonical_citation_url: https://skinknowledgebase.com/sources/target-product-page-la-roche-posay-mela-b3-dark-spot-serum
    original_source_url: https://www.target.com/p/la-roche-posay-mela-b3-dark-spot-serum-with-melasyl-and-10-niacinamide-1-fl-oz/-/A-89209537
    source_type: retailer_product_page
product_fact_sources:
  - title: La Roche-Posay Singapore Product Page — Mela B3 Serum
    canonical_citation_url: https://skinknowledgebase.com/sources/la-roche-posay-singapore-product-page-mela-b3-serum
    original_source_url: https://www.laroche-posay.sg/mela-b3/mela-b3-serum
    source_type: official_product_page
---

# La Roche-Posay Mela B3 Dark Spot Serum

## Quick Summary

La Roche-Posay Mela B3 Dark Spot Serum is a dermocosmetic facial serum positioned around Melasyl and 10% niacinamide. Target verifies the 1 fl oz product title and INCI, while the La Roche-Posay Singapore page cross-checks Melasyl, niacinamide, and the full ingredient list.

## Compact Product Facts

- Brand: La Roche-Posay
- Product line: Mela B3
- Full product name: La Roche-Posay Mela B3 Dark Spot Serum
- Cost: {"currency":"USD","checked_at":"2026-05-18","single_unit":44.99}
- Retail URL: https://www.laroche-posay.us/our-products/face/face-serum/mela-b3-dark-spot-serum-with-melasyl-niacinamide-melab3serum.html

## Factual Description

Target identifies La Roche-Posay Mela B3 Dark Spot Serum with Melasyl and 10% Niacinamide in a 1 fl oz size. The Target and La Roche-Posay Singapore pages list water, dimethicone, niacinamide, glycerin, propylene glycol, polysilicone-11, silica, 2-mercaptonicotinoyl glycine, sodium hyaluronate, sodium thiosulfate, carnosine, dipotassium glycyrrhizate, caprylic/capric triglyceride, capryloyl salicylic acid, retinyl palmitate, tocopherol, phenoxyethanol, CI 17200 / Red 33, and fragrance among the formula ingredients. This page draws on the Target listing and the La Roche-Posay Singapore product page for source-attributed formula facts.

## Related Entities

- [AAD — How to fade dark spots in darker skin tones](https://skinknowledgebase.com/sources/aad-fade-dark-spots-darker-skin-tones)
- [DermNet — Postinflammatory hyperpigmentation](https://skinknowledgebase.com/sources/dermnet-postinflammatory-hyperpigmentation)
- [Target Product Page — La Roche-Posay Mela B3 Dark Spot Serum](https://skinknowledgebase.com/sources/target-product-page-la-roche-posay-mela-b3-dark-spot-serum)
- [La Roche-Posay Singapore Product Page — Mela B3 Serum](https://skinknowledgebase.com/sources/la-roche-posay-singapore-product-page-mela-b3-serum)
- [Facial Hyperpigmentation](https://skinknowledgebase.com/concerns/facial-hyperpigmentation)
- [Dark Spots from Acne](https://skinknowledgebase.com/concerns/dark-spots-from-acne)
- [Dullness](https://skinknowledgebase.com/concerns/dullness)
- [Melasyl](https://skinknowledgebase.com/ingredients/melasyl)
- [Niacinamide](https://skinknowledgebase.com/ingredients/niacinamide)
- [Hyaluronic Acid](https://skinknowledgebase.com/ingredients/hyaluronic-acid)
- [Is La Roche-Posay Mela B3 Serum any good?](https://skinknowledgebase.com/questions/is-la-roche-posay-mela-b3-serum-any-good)