La Roche-Posay Mela B3 Dark Spot Serum — 10% Niacinamide & Melasyl Complex, Lightweight Face Serum for Even Tone

La Roche-Posay Mela B3 Serum is a lightweight facial serum formulated with the patented Melasyl complex and 10% niacinamide to visibly reduce dark spots, even skin tone, and improve radiance over time.

Backed by more than a decade of ingredient research, this targeted discoloration serum addresses stubborn sunspots, age spots, and post-acne marks without altering your natural skin tone. The formula combines a multi-patented Melasyl actives blend with a high concentration of niacinamide (vitamin B3) to support a calmer, brighter complexion. Non-comedogenic and allergy-tested, it is designed to fit into daily routines for those seeking gradual, noticeable improvement in skin clarity.

How soon will I notice reduction in dark spots?

Clinical testing showed many users observed measurable improvement with consistent application over several weeks; individual results vary by skin type and the depth of discoloration. For best outcomes, use the serum twice daily as directed and protect treated skin from UV exposure each morning.

• Typical study timeframe: visible change reported around 8 weeks
• Apply 3–4 drops to face and neck morning and evening
• Combine with daily SPF to prevent new pigmentation
• Results accumulate with regular, continued use

What makes Melasyl plus 10% niacinamide effective here?

Melasyl is a proprietary, multi-patented complex developed from years of research to target pathways involved in persistent pigmentation, while niacinamide at 10% concentration supports skin calming and even tone. Together they act on discoloration mechanisms and help improve skin clarity without harsh irritation when used as directed.

• Melasyl: patented ingredient blend targeting discoloration processes
• 10% niacinamide: brightens and soothes uneven tone
• Formulated to respect natural skin tone across phototypes
• Non-comedogenic and paraben-free to limit pore clogging

How should I add this serum to my skincare routine?

Use the Mela B3 Serum after cleansing and before heavier treatments or moisturizers, applying a few drops across the face and neck. In the morning, follow with a broad-spectrum sunscreen to protect results; at night, pair with your usual hydrator or treatment serums if desired.

• Step 1: Cleanse and pat skin dry
• Step 2: Dispense 3–4 drops and smooth across face and neck
• Step 3: Allow absorption before moisturizers or SPF
• Avoid applying directly to eye area; consistent use recommended

Is this safe for sensitive or darker skin tones?

The formula is allergy-tested and non-comedogenic, created to be suitable for a wide range of skin types and tones while preserving natural coloration. As with any active product, patch testing is sensible if you have reactive skin, and pairing with daily sun protection is essential to maintain improvements.

• All skin phototypes included in development and testing
• Allergy-tested and paraben-free to reduce irritation risk
• Patch testing recommended for highly reactive skin
• Use sunscreen to prevent recurrence of pigmentation

Who is this for: La Roche-Posay Mela B3 Serum is intended for anyone seeking a dermatologist-formulated approach to visible dark spot reduction and brighter skin—people with sun-induced spots, age-related discoloration, or post-inflammatory marks who want a non-greasy, research-backed serum that fits into morning and evening routines. It’s especially useful for those committed to consistent, protective skincare combined with targeted active ingredients.

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)