Azelaic Acid for Dark Spots?: What to Know Before Adding It to Your Routine

These days, settling on the optimal skincare routine feels more complicated than ever. With so many options, it can be hard to distinguish what you want from what you need. And if you’re dealing with hyperpigmentation, your number one question probably is: will azelaic acid help?

Let’s start with the basics: Azelaic acid is a dicarboxylic acid that can target multiple issues, including post-acne discoloration, uneven tone, and inflammation. It works by inhibiting tyrosinase, an enzyme involved in melanin production, which may help fade dark spots and post-acne marks.

It may also help reduce inflammation, which can trigger excess melanin production after skin injury, while calming redness and swelling. But that’s not all: azelaic acid also helps keep pores from clogging, which may reduce blemishes that can leave dark marks.

Those are a lot of big claims. But can azelaic acid actually help you fight hyperpigmentation? A 24-week clinical study published in 1998 found that 20% azelaic acid cream reduced facial pigment intensity more than the cream base alone in people with darker skin tones.

A small 2011 study compared 20% azelaic acid with 4% hydroquinone in 29 women with melasma, a type of hyperpigmentation. It suggested that azelaic acid cream applied twice daily may reduce mild melasma after two months, but the authors called for larger studies to confirm the findings.

Despite the positive findings, some things remain uncertain. The studies cited here used 20% azelaic acid, so their findings don’t tell us exactly what results to expect from a 10% over-the-counter product. That doesn’t mean lower strengths are ineffective, or that doubling the concentration doubles the results.

Prescription requirements vary by country. In the United States, prescription options include 20% Azelex cream, approved for mild-to-moderate inflammatory acne, and 15% Finacea gel, approved for the inflammatory bumps and pimples of mild-to-moderate rosacea—not just severe or persistent conditions.

Evaluate all skincare products based on skin type and skincare needs. Azelaic acid can cause stinging, burning, dryness, peeling, redness, or irritation. The prescribing information for 20% Azelex cream also notes isolated reports of hypopigmentation, or abnormal skin lightening, without establishing how often it occurs. It advises monitoring people with darker complexions for early signs and reporting abnormal skin-color changes to a clinician.

Like PDRN and other buzzy skincare ingredients, azelaic acid isn’t a one-size-fits-all solution. Results can depend on how the product is made, the type of discoloration you’re treating, your skin’s condition, and sun exposure. Personally, I regularly use The Ordinary’s Azelaic Acid Suspension 10% cream, and I feel it’s helped fade the hyperpigmentation on my cheeks and even out my skin tone.

Always test products on a small area before committing. The American Academy of Dermatology recommends testing a new skincare product twice daily for 7-10 days before using it regularly.

No ingredient works for everyone. The goal is to find products that suit your skin, budget, and routine—not chase a single miracle ingredient.