La Roche-Posay Mela B3 Dark Spot Correcting Serum — 10% Niacinamide, Lightweight Discoloration Treatment

La Roche-Posay Mela B3 Serum is a lightweight facial serum formulated with multi-patented Melasyl and 10% niacinamide to visibly reduce dark spots, sunspots, age spots and post-acne discoloration while improving overall radiance.

This advanced discoloration serum combines a novel Melasyl complex—born from nearly two decades of research—with a potent dose of niacinamide (vitamin B3) to target stubborn hyperpigmentation without stripping or altering natural skin tone. Designed for daily use and suitable for all skin types, the formula absorbs quickly, feels non-greasy, and is non-comedogenic, paraben-free, and allergy-tested. Clinical testing shows notable improvements in persistent dark spots with consistent application over eight weeks.

How quickly will I see results on sunspots and age spots?

Visible improvements typically appear with regular use within weeks, with the most consistent clinical outcomes reported after eight weeks. Results vary by individual skin condition and adherence to application twice daily.

• Clinically studied: many participants saw reduction in persistent spots after 8 weeks.
• Use morning and evening for best results.
• Pair with daily SPF to prevent new discoloration.

What active ingredients make this serum effective?

The formula pairs Melasyl, a multi-patented La Roche-Posay complex developed from long-term research, with 10% niacinamide. Together they work to reduce pigment intensity, support skin tone balance, and soothe the skin while preventing visible darkening over time.

• Melasyl: targets pigmentation pathways to reduce existing dark spots.
• 10% niacinamide: calms skin and helps fade uneven tone.
• Non-comedogenic base: lightweight texture allows quick absorption.

Is this serum safe for sensitive or acne-prone skin?

The formulation is allergy-tested, paraben-free, and non-comedogenic, making it suitable for many sensitive and acne-prone skin types. As with any active treatment, introduce gradually and avoid the eye area; discontinue if irritation occurs.

• Allergy-tested to minimize irritation risk.
• Non-comedogenic: formulated to avoid pore-clogging.
• Avoid contact with eyes and use sunscreen during daytime.

How should I include Mela B3 Serum in my routine?

Apply 3–4 drops to clean face and neck morning and evening, smoothing until fully absorbed. In the morning, follow with a broad-spectrum SPF; at night, you can layer under your moisturizer or targeted treatments as needed.

• Apply after cleansing and before moisturizer.
• Use sunscreen each morning to protect results.
• Consistent twice-daily use yields best outcomes.

Who this is for: La Roche-Posay Mela B3 Serum is intended for people of all skin tones and types who want to reduce visible dark spots—whether caused by sun exposure, aging, or post-inflammatory marks—and who prefer a dermatologist-backed, science-driven approach. It's especially useful for those seeking a lightweight, everyday serum that layers easily in a routine and pairs with sun protection to maintain long-term clarity and radiance.

Ingredients

AQUA / WATER / EAU • DIMETHICONE • NIACINAMIDE • GLYCERIN • PROPYLENE GLYCOL • POLYSILICONE-11 • SILICA • BIS-PEG/PPG-16/16 PEG/PPG-16/16 DIMETHICONE • CYSTOSEIRA TAMARISCIFOLIA EXTRACT • 2-MERCAPTONICOTINOYL GLYCINE • PEG-20 METHYL GLUCOSE SESQUISTEARATE • SODIUM HYALURONATE • SODIUM HYDROXIDE • SODIUM THIOSULFATE • CARNOSINE • POLOXAMER 338 • AMMONIUM POLYACRYLOYLDIMETHYL TAURATE • DIPOTASSIUM GLYCYRRHIZATE • CAPRYLIC/CAPRIC TRIGLYCERIDE • CAPRYLOYL SALICYLIC ACID • CAPRYLYL GLYCOL • CITRIC ACID • TRISODIUM ETHYLENEDIAMINE DISUCCINATE • XANTHAN GUM • PENTYLENE GLYCOL • OCTYLDODECANOL • RETINYL PALMITATE • TOCOPHEROL • PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE • PHENOXYETHANOL • CI 17200 / RED 33 • PARFUM / FRAGRANCE (F.I.L. N70037312/1)