While vitamin C is frequently promoted for skin brightening, a dermatologist suggests several alternatives that may be more effective for addressing hyperpigmentation, such as dark spots, acne marks, and melasma. Dr. Sonia Khorana, a general practitioner with a focus on dermatology, notes that while vitamin C is a beneficial antioxidant, it may not be the most potent single ingredient for treating pigmentation.
Dr. Khorana advocates for a combination approach, emphasizing that prescription treatments like hydroquinone and tretinoin remain the gold standard for stubborn hyperpigmentation. However, several over-the-counter ingredients can target pigmentation through different mechanisms, including reducing melanin production, inflammation, or pigment transfer.
Tranexamic acid is highlighted as a rising star in dermatology. Originally used to control bleeding, it now shows promise for pigmentation by reducing inflammatory signals that contribute to excess melanin production. Dr. Khorana recommends topical formulations with 2–5% of the ingredient, noting that oral tranexamic acid has stronger evidence for melasma but requires medical supervision. It can be effectively combined with other skincare ingredients like niacinamide and retinoids.
Azelaic acid is another favored ingredient due to its dual action of tackling pigmentation and reducing inflammation. It is particularly effective for post-inflammatory hyperpigmentation from acne and can also help with melasma. Dr. Khorana suggests over-the-counter products with 10% azelaic acid, noting its suitability for sensitive skin and rosacea, and its compatibility with retinoids and niacinamide.
Niacinamide, a common skincare component, helps reduce the noticeability of dark marks by limiting melanin transfer to surrounding skin cells. Dr. Khorana recommends concentrations of 4-5%, suitable for most skin types, including sensitive skin. She also points to products containing niacinamide alongside other patented molecules designed to trap excess melanin.
Other recommended ingredients include cysteamine, which works through multiple pathways to address stubborn pigmentation; alpha arbutin, effective for mild sunspots and post-breakout marks by inhibiting melanin-producing enzymes; thiamidol, a patented ingredient with clinical data supporting its effectiveness against age spots and hyperpigmentation; and kojic acid, derived from fungi, which also inhibits melanin production and performs best when combined with other actives.
Regardless of the chosen ingredient, Dr. Khorana stresses the non-negotiable importance of daily broad-spectrum SPF. She explains that pigmentation is prone to recurring, and consistent sun protection is essential for maintaining the results achieved with active ingredients.