The Ordinary
The Ordinary Azelaic Acid Suspension 10%
$8-10
Key Takeaways
- Azelaic acid is an underrated multipurpose active that addresses redness, pigmentation, and acne simultaneously
- The Ordinary's version makes this prescription-adjacent ingredient accessible at under $10
- The silicone-heavy texture is a real usability issue — applying it as the last step before SPF or blending into moisturizer helps
- Best results appear at 8-12 weeks of consistent use — patience is required
Best For
Pros & Cons
Pros
- Effective for redness, rosacea, and post-inflammatory hyperpigmentation
- Gentle compared to AHAs and BHAs — tolerated by sensitive skin
- Affordable access to a prescription-grade active at cosmetic concentration
- Works on multiple concerns simultaneously (texture, redness, pigmentation)
Cons
- Heavy silicone base causes pilling under most makeup and sunscreens
- Gritty white texture is polarizing and takes effort to blend
- Results require 8-12 weeks of consistent use — no quick wins
Key Ingredients
Azelaic Acid
A naturally occurring dicarboxylic acid with anti-inflammatory, antibacterial, and brightening properties. One of the few actives safe for rosacea-prone and sensitive skin, and among the most well-researched ingredients for melasma and post-inflammatory hyperpigmentation.
Niacinamide
A form of vitamin B3 that strengthens the skin barrier, reduces inflammation, and regulates sebum production. One of the most versatile and well-studied active ingredients in modern skincare.
Full Ingredient List
Aqua (Water), Isodecyl Neopentanoate, Dimethicone, Azelaic Acid, Dimethicone Crosspolymer, Dimethyl Isosorbide, Polysilicone-11, Ethylene/Propylene/Styrene Copolymer, Butylene/Ethylene/Styrene Copolymer, Alcohol Denat., Isostearyl Isostearate, Bisabolol, Silica, Stearoxy Dimethicone, Phenoxyethanol, Chlorphenesin
Overview
Azelaic acid doesn’t get the attention it deserves. While niacinamide and vitamin C dominate the brightening conversation and retinol owns anti-aging, azelaic acid quietly treats redness, hyperpigmentation, acne, and rosacea with minimal irritation — and it’s one of few actives safe enough for pregnant skin and recommended across the Fitzpatrick spectrum.
The Ordinary’s 10% Azelaic Acid Suspension makes this underrated ingredient accessible for under $10. The catch is a silicone-heavy formula that creates real usability friction.
Ingredient Analysis
Azelaic Acid (10%) is the star. It’s a dicarboxylic acid that occurs naturally in grain (wheat, rye, barley) and is also produced by Malassezia yeast on the skin. Its mechanisms are broad: it inhibits tyrosinase (reducing melanin synthesis), disrupts bacterial cell protein synthesis (antimicrobial against P. acnes), and modulates inflammatory pathways (calming rosacea and papulopustular breakouts).
At 10%, this formula is at the upper boundary of what’s classified as a cosmetic ingredient in most markets. Prescription azelaic acid runs at 15-20%.
Dimethicone and Polysilicone-11 make up a significant portion of the base. The silicone matrix is designed to create a smooth, even distribution of the azelaic acid suspension on skin — but it also creates a film that interferes with everything layered above it.
Bisabolol adds anti-inflammatory support as a chamomile-derived active, complementing azelaic acid’s own soothing properties.
Dimethyl Isosorbide is a penetration enhancer that improves azelaic acid delivery into the skin, partially compensating for the potential barrier created by the silicone base.
Texture and Application
This is where the product becomes challenging. The suspension has a gritty, thick white consistency — it needs thorough massage to blend invisibly into skin. It should be applied as the final step before SPF in the morning (after serums and moisturizer), or as the last step at night. Applying it mid-routine and then layering is asking for pilling.
Results
Azelaic acid results are slow and steady. Redness reduction is typically the first thing users notice, often within 4-6 weeks. Pigmentation improvement takes longer — 8-12 weeks minimum for meaningful change, with the best results at 3-4 months. Acne response falls in between.
Verdict
The Ordinary Azelaic Acid Suspension 10% is a genuinely effective product for people willing to work around its texture. For sensitive skin dealing with redness or post-inflammatory marks, for skin of color managing melasma, and for rosacea-prone skin looking for a gentle active — this formula earns its place despite the application friction. If the texture is a dealbreaker, Typology and Paula’s Choice both offer azelaic acid in cleaner bases.
Frequently Asked Questions
What skin concerns does azelaic acid actually address?
Azelaic acid is a dicarboxylic acid with three main functions. It inhibits tyrosinase, the enzyme responsible for melanin synthesis, which makes it effective for hyperpigmentation and melasma. It has antimicrobial properties that reduce acne-causing bacteria. And it's a mild anti-inflammatory that calms rosacea-related redness. It's one of the few ingredients that genuinely works across all three of these areas simultaneously.
How does The Ordinary Azelaic Acid compare to prescription azelaic acid?
Prescription azelaic acid (like Finacea) typically comes at 15-20% and in a gel or cream base that absorbs cleanly. The Ordinary's 10% suspension is lower concentration and the silicone-heavy texture is harder to use. For mild pigmentation and redness management, the 10% formulation is sufficient. For moderate rosacea or significant melasma, the prescription strength and better texture of Finacea are worth the dermatologist visit.
Can I use azelaic acid with retinol?
Yes, they're compatible and can complement each other. Apply azelaic acid first as a treatment on dry skin, let it absorb, then follow with retinol. Alternatively, use them on alternating nights if your skin is sensitive. Azelaic acid's anti-inflammatory properties can help buffer retinol-related irritation over time.