Azelaic acid acne guide
How to use azelaic acid 15% gel for mild to moderate facial papulopustular acne and protect your skin barrier.
Azelaic acid acne guide
How to use azelaic acid 15% gel for mild to moderate facial papulopustular acne and protect your skin barrier.
- READ TIME
- 2 min read
- PATHWAY
- Azelaic acid 15%
- DOSE RANGE
- 15% → 15%
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How to use
- What it is and how it works
Azelaic acid helps keep pores clear and reduces inflammation and acne-associated bacteria. This guide covers the prescribed 150 mg/g gel for mild to moderate facial papules and pustules.
- Apply it as prescribed
Apply a thin layer to clean, dry skin twice daily. About a 2.5 cm strip of gel is enough for the whole face. Keep it away from the eyes, mouth, mucosa and broken skin, then wash your hands.
- Skin care and interactions
Use a gentle cleanser, a non-comedogenic moisturiser and SPF 30–50+ each day. Do not apply another facial acne medicine at the same time unless your prescriber has reviewed the combination. Avoid alcohol-based, abrasive or drying products.
First 4 weeks. Take a photo of your face in the same light at the start and at 4 weeks; lesion counts change before you notice them in the mirror. Stinging, itching and dryness in the first 2 weeks are expected. Use less gel or a bland moisturiser rather than stopping. If you have asthma, note any change in control and tell your doctor.
Weeks 4-12. Stop and ask for review if acne has not improved at all after 1 month, or if it is worsening or scarring. Do not add other active products (retinoids, acids, benzoyl peroxide) without asking your doctor. At 12 weeks, compare photos with your doctor to decide on maintenance or a change of plan.
Treatment pathway
- 15%Weeks 1-2
- 15%Weeks 3-4
- 15%Weeks 5-12
Reviews happen through your account chat; send photos in the same light each time.
See the full decision pathway
Your azelaic acid pathway
Weeks 1-12
Azelaic acid 15% twice daily
A 2.5 cm strip for the whole face, morning and evening, with a gentle cleanser, moisturiser and SPF.
At 4 weeks, are there fewer new spots and is the skin tolerating the gel?
Yes
Continue to 12 weeks
Full response is judged at 12 weeks; the gel can then continue as maintenance.
No
Doctor review
Your doctor may switch to adapalene + benzoyl peroxide, add an oral option, or reassess the diagnosis.
Weeks 1-12After 12 weeks
Clear or nearly clear
Maintenance
Continue azelaic acid once or twice daily; review every 12 weeks.
Partial response
Step up
Switch to or combine with adapalene + benzoyl peroxide, or discuss an oral antibiotic course.
Reviews happen through your account chat; send photos in the same light each time.
Dose schedule
| Dose | When | Note |
|---|---|---|
| 15% gel, twice daily | Weeks 1-2 | Stinging and itching are common at first; use less product rather than stopping. |
| 15% gel, twice daily | Weeks 3-4 | Irritation settles; first improvement is usually visible. Doctor review at 4 weeks. |
| 15% gel, twice daily | Weeks 5-12 | Full response judged at 12 weeks; may continue as antibiotic-free maintenance. |
How it compares
| Acne treatments compared | How it works | Best suited for | How often | Judged at | In pregnancy |
|---|---|---|---|---|---|
| Azelaic acid 15% | Clears pores, reduces bacteria and inflammation; no antibiotic or retinoid | Mild to moderate papules and pustules; sensitive skin | Twice daily | 12 weeks | Individual decision with your doctor |
| Adapalene + benzoyl peroxide | Retinoid unblocks pores; benzoyl peroxide kills bacteria | Comedones with papules or pustules; any severity; maintenance | Once nightly | 12 weeks | Contraindicated |
| Clindamycin + benzoyl peroxide | Topical antibiotic plus benzoyl peroxide to prevent resistance | Mild to moderate acne where inflamed spots dominate | Once nightly | 12 weeks maximum | Only after individual risk-benefit review |
Based on NICE NG198 (2021) first-line 12-week options and the EU product information for each medicine.
Side effects
Local irritation
Mild redness, dryness, stinging or peeling can occur, especially at the start. Use a gentle moisturiser and follow the prescribed adjustment plan. Stop and seek advice if the reaction is marked or persistent.
Sensitivity or asthma symptoms
A rash or colour change can occur, and asthma has rarely worsened. Stop using the gel and seek advice for a spreading rash, wheeze or a clear change in asthma control.
Do not use if
- You are allergic to azelaic acid or an ingredient in the gel
- The treatment area has cuts, active eczema, severe irritation or sunburn
- You are pregnant or breastfeeding and your clinician has not made an individual decision
When to contact your doctor
- Facial swelling, breathing difficulty, widespread blistering, eye pain, light sensitivity or altered vision: seek urgent medical care
- Acne is worsening, scarring is developing, or there is no improvement after 1 month
- Wheezing, shortness of breath or worse asthma control after starting the gel
Storage
Keep the tube tightly closed in its original package, out of children's reach. Follow the temperature and expiry instructions on the label and do not use the product after it expires.
What to expect
Improvement is usually gradual and may become noticeable after about 4 weeks. Keep the routine consistent until review; do not add extra active products in an attempt to speed the response.
Sources
Questions while you're on treatment?
Message your doctor in your private chat about side effects, doses or anything that worries you. Replies in under 2 hours on average.
- Follow up on your skin treatment in the chat
- Download your e-prescription
- Renewals reviewed by your doctor
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