On the other hand, certain ingredients can trigger irritation and should be avoided if you're using kojic acid in your skincare routine. Harsh acids, like alpha-hydroxy acids (AHAs), are a prime example, as well as certain retinoids.
To increase its effectiveness, kojic acid is frequently combined with other skin lightening agents such as hydroquinone, vitamin C, and niacinamide. Although it is generally regarded as safe for use in skincare products, some people may experience skin irritation or sensitivity.
High Concentrations of AHAs/BHAs: The Acid Overload
Now, let's talk about AHAs (Alpha Hydroxy Acids) and BHAs (Beta Hydroxy Acids). They're fantastic for exfoliation and clearing up your skin, but here's the kicker: when you mix them with kojic acid in high concentrations, it's like a bad acid trip… literally.
Because it is a whitening soap, your skin will become dry so you'll have to apply a moisturizer or lotion. Kojic acid also increases sun sensitivity thus if you don't wear sunscreen or sunblock before going out, even staying indoors next to windows, can cause your skin to darken.
You can use Kojic Acid & Vitamin C together but make sure you follow an AM-PM routine. Use Vitamin C in the morning followed up by a sunscreen and Kojic Acid at night before going to bed.
Niacinamide. This superhero skincare ingredient beautifully complements kojic acid's brightening properties. It also protects the skin against environmental damage, soothes irritation, boosts collagen production, and regulates oil production so you can cover all of your skincare bases!
Kojic Acid can make your skin more sensitive to the harmful effects of sunlight. Hence it is advised to use sunscreen and wear protective clothing while using Kojic Acid. It is recommended to avoid tanning booths and sunlamps.
La Roche-Posay Glycolic B5 Serum with Kojic Acid
Not only does it boast the most Amazon reviews, but this kojic acid skincare product relies on some impressive ingredients to give you cover-shot-worthy skin minus Photoshop.
Kojic acid soap is used to lighten dark spots on the skin caused by hyperpigmentation from acne, melasma, or sun damage. Research shows kojic acid treatments, such as topical serums, can help fade hyperpigmentation.
DON'T MIX: AHA/BHA and niacinamide
Niacinamide is used to treat hyperpigmentation and reduce fine lines and wrinkles, while alpha hydroxy acids (AHAs) and beta hydroxy acids (BHAs) are chemical exfoliants. To understand why niacinamide shouldn't be mixed with AHAs and BHAs, you need to consider pH.
“If you are using a kojic acid soap, it's helpful to combine it with other ingredients such as turmeric or glycolic acids,” Dr. Madfes advises.
Even people with dry skin to get maximum benefits of active ingredient Kojic acid can go for serums. To combat dryness, they can add Hyaluronic acid before kojic acid and apply a non-comedogenic moisturizer after Kojic acid serum.
Avoid using concentrated kojic acid on your skin daily if you have hypersensitive or reactive skin. It can make your skin more sensitive to sun damage. Therefore, always follow up with sunscreen during the day. It can also dry or irritate your skin if you have allergies or sensitivity.
The Benefits of Combining Kojic Acid and Hyaluronic Acid
Addressing Multiple Skin Concerns: The combination of Kojic Acid and Hyaluronic Acid allows you to tackle a wide range of skin concerns, including uneven skin tone, dullness, fine lines, and dehydration, all in one comprehensive skincare routine.
Kojic acid is generally suitable for all skin types. However, if it is combined with other exfoliating acids like glycolic acid, it is recommended not to use it every night to avoid over-exfoliating the skin. Kojic acid can cause irritation or contact dermatitis if the concentration is too high.
One compatible ingredient that can be used with Kojic acid is Vitamin C. When combined, this blend of these active ingredients can boost the skin's brightening and antioxidant effects. Vitamin C helps to further inhibit melanin production and promote collagen.
Kojic acid works on only one cause, inhibiting melanin production, and is ineffective against the other two chief reasons. It also comes with its cautions and probable effects such as itching, inflammation, burning, redness, and increased skin sensitivity, leading to more sunburns.
Kojic Acid further enhances the brightening effect by inhibiting melanin production, while Niacinamide helps to improve skin texture and reduce the appearance of pores.
The Synergy. When kojic acid and retinol work together, it's a one-two punch against pigmentation and aging. Kojic acid lightens dark spots and evens out skin tone, while retinol ensures your skin is fresh, smooth, and resilient.
Retinoids don't combine well with AHAs, benzoyl peroxide, salicylic acid, or vitamin C due to potential stability issues and skin sensitivities, and soap-based cleansers can also reduce vitamin C's skin benefits.