Kojic Acid
Kojic acid is a popular skin-brightening ingredient widely used in UK serums, creams and masks. It helps fade the look of dark spots, hyperpigmentation and uneven skin tone, giving a brighter, more even complexion over time. Gentle enough for most skin types when used correctly, it is a favourite in many British beauty routines.
How it works in skincare
In cosmetics and skincare, kojic acid works by inhibiting the enzyme tyrosinase, which is involved in the production of melanin. This action helps reduce the appearance of pigmentation, age spots and post-acne marks, resulting in a more luminous and uniform skin tone. It is commonly formulated into lightweight serums, spot treatments and sheet masks at concentrations between 1-4 percent and pairs well with soothing or hydrating ingredients to minimise potential sensitivity.
Key benefits
- Helps fade the appearance of dark spots and sun damage
- Promotes a brighter, more even skin tone
- Reduces the look of post-acne marks
- Helps minimise visible hyperpigmentation
- Gives skin a more luminous appearance
- Suitable for targeted spot treatment
Best for
dull skin, uneven skin tone, mature skin, oily skin, combination skin, pigmentation concerns
Where it comes from
Kojic acid is a naturally occurring compound produced by several species of fungi, particularly Aspergillus oryzae, the mould used in the fermentation of rice for Japanese sake and miso.
Products with Kojic Acid
Not every product on UK Lips lists a full ingredient breakdown — so there may be many more formulas that contain Kojic Acid than we can show here. These are the comparisons where we’ve confirmed it in the listed ingredients.
- SkinCeuticals Discolouration Defence Serum (2 x 30ml) Duo SkinCeuticals
- SkinCeuticals Discolouration Defence Serum (30ml) SkinCeuticals