Kojic acid for dark spots

Dark spots can follow acne, eczema, injury, or another inflammation-related change. They can also occur with melasma, sun spots, or tinea versicolor, and their colour, scale, location, and pattern may differ. Kojic acid targets pigment production; it does not treat an infection or identify a suspicious lesion.

A spot may become more noticeable when skin is irritated or exposed to sunlight. Treating a changing patch as a simple cosmetic mark can delay the right assessment, so diagnosis matters when the pattern is unusual or the history is unclear.

If a clinician agrees that a topical product is suitable, patch test it and apply it exactly as directed to intact skin. Start gently, moisturise, and avoid combining it with aggressive scrubs or several exfoliating products. Daily broad-spectrum sunscreen, protective clothing, and shade help limit ongoing pigment stimulation.

For persistent or widespread marks, ask whether [Skin Brightening Treatment](/treatments/aesthetic-procedures/skin-brightening-treatment/) is appropriate. Other clinician-led options may include a [Chemical Peel](/treatments/aesthetic-procedures/chemical-peel/) or [Picosecond Laser Treatment](/treatments/laser-and-energy/picosecond-laser-treatment/), depending on the diagnosis and skin characteristics. Related explanations include [Dark Patches On Skin](/symptoms/dark-patches-on-skin/), [Melasma](/conditions/melasma/), [Post-Inflammatory Hyperpigmentation](/conditions/post-inflammatory-hyperpigmentation/), [Sun Spots](/conditions/sun-spots/), and [Tinea Versicolor](/conditions/tinea-versicolor/).

Arrange prompt medical assessment for a spot that changes in size, shape, or colour, bleeds, crusts, ulcerates, becomes painful, or stands out from your other marks. Seek advice for a spreading, scaly, or itchy area, especially if several people in the household have similar symptoms. Stop kojic acid for severe burning, swelling, blistering, or a persistent rash.

What is the likely cause of these dark spots? Would kojic acid help that cause, or could it make irritation worse? Should I treat the underlying inflammation or infection first? Which procedure, if any, fits my skin and diagnosis?