Understanding Dark Spots
Dark spots — also called hyperpigmentation, post-inflammatory marks, or melasma — occur when melanin (the pigment that gives skin its colour) is overproduced in certain areas. This can be triggered by sun exposure, acne, hormonal changes, or skin inflammation.
Two of the most effective natural ingredients for fading dark spots are Vitamin C and Kojic Acid. Both work by inhibiting melanin production, but they do so in different ways and suit different skin types.
How Vitamin C Works
Vitamin C (ascorbic acid) is a powerful antioxidant that brightens skin by neutralising free radicals and inhibiting the enzyme tyrosinase — which is responsible for melanin synthesis. It also stimulates collagen production, giving skin a firmer, more radiant appearance over time.
Best for: General brightening, uneven skin tone, dullness, and early signs of ageing. Suitable for most skin types including sensitive skin when formulated at the right concentration.
How Kojic Acid Works
Kojic Acid is a naturally derived compound (produced by certain fungi during fermentation) that also inhibits tyrosinase. It's particularly effective at targeting stubborn, localised dark spots such as age spots, sun spots, and post-acne marks.
Best for: Targeted dark spot correction, age spots, and more persistent hyperpigmentation. Works well for skin that hasn't responded fully to Vitamin C alone.
Can You Use Both?
Yes — Vitamin C and Kojic Acid can complement each other. A common approach is to use a Vitamin C serum in the morning (with SPF) for overall brightening and antioxidant protection, and a Kojic Acid cream in the evening for targeted spot correction.
Our Brightening Picks
- KERTIH Vitamin C Serum — ECOCERT-certified, vegan, formulated for sensitive skin. Brightens overall complexion and evens skin tone.
- KERTIH Dark Spot Face Cream with Kojic Acid — ECOCERT-certified targeted treatment for stubborn dark spots and uneven pigmentation.
Both are free from synthetic fragrances and harsh chemicals, making them suitable even for reactive skin types.