For optimal results, kojic acid can be used daily to address hyperpigmentation and prevent free radical damage. When combined with other exfoliating acids, limit use to 2-3 times a week to avoid irritation.
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.
Kojic acid soap can take months to show results, and it often takes up to three months for kojic acid products to work. 7 Because kojic acid soap can irritate and dry skin with persistent use, some people use kojic acid soap for a few months and then take a break to help avoid irritation.
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.
If you stop using kojic acid, your skin may gradually return to its original state, particularly if the underlying causes of hyperpigmentation are not addressed.
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.
Glycolic Acid
It is an alpha-hydroxy acid (AHA) derived from sugarcane. In low concentrations, glycolic acid produces desquamation of pigmented skin cells. About 30 to 70 per cent of glycolic acid can enhance the penetration of other skin lighteners such as HQ.
Kojic acid's properties allow it to be a bleaching agent when used in creams, gels, and other cosmetics. Kojic acid is similar to a chemical called hydroquinone. They are both effective treatments for hyperpigmentation.
Moisturize: Follow up with a nourishing moisturizer to seal in the benefits of kojic acid and keep your skin hydrated. Sunscreen (AM only): Since kojic acid can increase sun sensitivity, always finish with a broad-spectrum sunscreen during the day.
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.
Yes, you can use Kojic acid-based skincare products such as a cream and leave it overnight on your skin. However, we recommend reading the instruction labels of the product and using it accordingly for best results.
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! Licorice extract.
SAFETY: Kojic acid is safe for topical use in concentrations of up to 1% in skin care products. Do not use longer than 3 months at a time.
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.
A general rule of thumb is to layer 2-3 serums. This ensures skin doesn't become overwhelmed and gives each formula the space to absorb properly. However – as mentioned above, all skin is unique. Some skin concerns could benefit from up to 5 serums, if heightened moisture, protection and firming for example is needed.
As sun exposure worsens hyperpigmentation it is important to protect the skin with sunscreen on a daily basis. Treatment often begins with a skin care regimen composed of a daily sunscreen, moisturizers, and skin care brighteners.
Kojic Acid further enhances the brightening effect by inhibiting melanin production, while Niacinamide helps to improve skin texture and reduce the appearance of pores.
Though kojic acid soaps can work on most skin types, experts say that those with sensitive or dry skin should be cautious as it may sometimes cause irritation. “Those with dry skin may want to opt for soaps with moisturizing properties,” advises Dr. Gohara. “Always do a patch test before using it regularly.”
Alpha Arbutin has comparatively fewer risks than many whitening ingredients, including kojic acid, making it effective for dark spots and melanin overproduction.