What should you know about kojic acid and vitamin C?

Kojic acid is used in topical brightening products to reduce the formation of excess pigment. Vitamin C is an antioxidant ingredient that can help support a more even-looking complexion and protect against environmental oxidative stress. Formula strength, acidity, packaging, and the rest of your routine affect tolerability. Dark marks can also reflect acne or eczema inflammation, so fading the colour without addressing the trigger may lead to recurrence.

If you want both ingredients, consider starting with one product on alternate days, then assess dryness or stinging before adding the other. Avoid applying them immediately after scrubs, waxing, peels, or other irritating treatments. Moisturiser supports the skin barrier, while daily sunscreen helps prevent new pigment from becoming more visible. Keep vitamin C sealed as directed; a markedly darker or changed product may have oxidised and should be replaced according to its label.

Get medical help for facial swelling, hives, blistering, severe burning, or eye symptoms after application. A dermatologist should assess pigment that is spreading, changing, or associated with a new mole-like lesion. If careful use causes ongoing redness or worsening darkening, pause the routine and ask about another diagnosis or treatment approach.

Ask which ingredient to begin with, whether your skin condition makes acids unsuitable, and how to fit prescribed medicines around a brightening routine.