La Roche‑Posay Mela B3 Serum

What Is It

La Roche‑Posay Mela B3 Serum is a lightweight, pink‑tinted facial serum formulated to visibly reduce dark spots, sun spots, age spots, and post-acne marks. It combines the patented Melasyl™ complex—a pigmentation-targeting molecule developed over 18 years—with 10% niacinamide (vitamin B3), plus soothing La Roche‑Posay prebiotic thermal water. The formula is allergy‑tested, dermatologist‑tested, non‑comedogenic, free of parabens, and fragrance‑tested.

 Benefits

• Reduces and fades existing discoloration, especially post-inflammatory brown marks, sunspots, and age spots through dual-action: melasyl arrests melanin formation while niacinamide brightens and soothes.

• Prevents new pigmentation by working upstream in melanin production. Users report fewer new spots forming.

• Improves skin tone and radiance through consistent use (most studies show meaningful results by 8–12 weeks; some see change in 2–4 weeks).

• Non-irritating formula suitable for sensitive skin—free of harsh acids, no added harsh fragrance, lightweight texture sinks in quickly without stickiness.

Note: Some users on Reddit report irritation, dryness, or sensitivity—particularly those prone to breakouts or sensitive to fragrance or dyes used.

 How to Use

1. Apply 3–4 drops to clean, dry skin.

2. Use morning and evening, after cleansing, on face and neck—avoiding the eye area.

3. Gently massage into skin using fingertips.

4. In the morning, follow with a broad-spectrum sunscreen (e.g. Mela B3 UV Daily Moisturizer SPF 30).

5. Continue daily use for at least 8–12 weeks for optimal results.

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