The Accutane purge: Can you avoid it?

Dr. Eric Howell, dermatologist, talks about the Accutane purge and tells you how to reduce its symptoms.

Medically reviewed by:
Dr. Eric Howell
Dermatologist

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What is the Accutane purge?

Dr. Eric Howell, board-certified dermatologist, says that the Accutane (isotretinoin) purge is a temporary worsening of acne that some people experience shortly after starting Accutane (isotretinoin) treatment. It can be frustrating —especially since Accutane is meant to clear acne, not worsen it. However it’s usually a short-lived phase in the treatment process which also means the treatment is working.

Why does Accutane cause purging?

Dr. Howell says that Accutane causes purging due to the effects it has on the skin, leading to temporary changes that may worsen acne before improving it.

Here’s what causes it:

Deep exfoliation: Accutane speeds up skin cell turnover, which means it brings existing clogs, oil, and impurities to the surface more quickly than usual.
Sebum suppression: It drastically reduces the amount of oil (sebum) your skin produces. At first, this sudden change can throw your skin off balance, making existing acne worse before it gets better.
Inflammation response: Accutane can initially irritate the skin, triggering inflammation that might cause acne to look more red and swollen.

Interested in an Accutane prescription?

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Does everyone purge on Accutane?

Dr. Howell says that not everyone experiences a purge while taking isotretinoin. While some people notice their acne temporarily getting worse after starting isotretinoin, many do not experience an initial flare at all.

Research suggests that up to 32% of patients may experience an acne flare during the first month of isotretinoin treatment, meaning most patients do not. When a flare does occur, its severity can vary, but most cases are mild to moderate.

Certain factors may influence your likelihood of experiencing a purge, including the severity of your acne and your isotretinoin dosage. Your dermatologist may recommend starting with a lower dose and gradually increasing it, particularly if you have severe or cystic acne and are at greater risk of a flare.

So, purging is a possible part of Accutane treatment, but it is not something everyone should expect to go through.^{2 3.}

What to expect while going through the isotretinoin purge?

If you do experience a purge with Accutane, here’s what it might look and feel like:

Worsening acne: You may notice more breakouts, often deeper and more inflamed than usual, especially in the first few weeks.
Dryness and peeling: Accutane reduces oil production, which can lead to dry, flaky skin—even in places you’ve never had issues.
Redness and irritation: Your skin may feel sensitive, tight, or look red and inflamed.
Breakouts in new areas: Some people get acne in places they haven’t before (like their neck or chest).
Emotional impact: The purge can be discouraging, especially when you were hoping for improvement. It’s normal to feel a bit anxious or frustrated during this phase.

How to avoid the Accutane purge?

Dr. Howell says that while you can’t avoid the Accutane purge completely, there are some steps you can take to reduce the risk or make it milder. Starting with a low dose is one of the most effective ways, especially for people with severe or cystic acne.

In addition to that, Dr. Howell says he sometimes also prescribes oral antibiotics or topical treatments to calm the skin before beginning Accutane.

How to minimize the Accutane purge?

Dr. Howell says that if you are already going through the purge, these tips can help minimize discomfort and support your skin:

Start with Accutane (isotretinoin) with a low dose

Dr. Howell explains that starting Accutane (isotretinoin) with a low dose allows your body and skin to adapt more gradually to the powerful medication. This approach significantly reduces the risk of a sudden acne flare—commonly known as the purge—and can also lessen common side effects like dryness, irritation, and inflammation. Gradually increasing the dose over time helps the skin build tolerance and makes the treatment process more manageable. He says he often tailors the starting dose based on the patient’s weight and acne severity, so it’s important to discuss a personalized plan before starting treatment.

Take an antihistamine with isotretinoin

Dr. Howell says that research shows that using an over-the- counter antihistamine (such as Claritin, Zyrtec, Allegra or Benadryl) can be safely used alongside Accutane to help reduce inflammation and allergic-type reactions like itching or redness. Clinical studies have shown that this combination can reduce itching by 30% and acne breakouts by 40% compared to Accutane alone. Antihistamines work by calming the body’s histamine response, which can help relieve dryness, irritation, and other symptoms that commonly appear during the purge phase^{4 5}.

Ask your dermatologist about prescribing an oral steroids (like Prednisone) in case of severe flare-ups

For patients experiencing severe flare-ups—especially painful, inflamed, or cystic breakouts—Dr. Howell has sometimes prescribed a short course of oral corticosteroids like prednisone. These medications are anti-inflammatory and help quickly calm down intense immune responses triggered by isotretinoin. This is typically a temporary solution to get the acne under control while continuing Accutane^{6 7}.

Dr. Howell emphasizes that steroids should only be used under close medical supervision, as they can have significant side effects if misused or taken for more than a month or two.

Maintain a gentle skincare routine

Dr. Howell emphasizes the importance of being kind to your skin during Accutane treatment. Avoid products containing active ingredients like retinoids, benzoyl peroxide, or salicylic acid unless specifically directed by your dermatologist. Instead, stick to a non-foaming, fragrance-free cleanser, a rich, hydrating moisturizer, and broad-spectrum, sunscreen SPF 50. Keeping your skin barrier strong and protected helps reduce sensitivity and flaking, especially during the purge.

Use non-comedogenic products

Everything that touches your skin—cleanser, moisturizer, sunscreen, makeup—should be labeled “non-comedogenic”, meaning it won’t clog pores. During the purge, your skin is already prone to breakouts, so it’s essential to avoid anything that could make it worse. Oil-free and lightweight formulas are typically best. Dr. Howell recommends looking for minimal-ingredient products to reduce the risk of irritation or allergic reactions.

Avoid picking or squeezing blemishes

It might be tempting, especially during the purge, but picking at your skin can make inflammation worse, push bacteria deeper, and increase your chances of permanent scarring. Dr. Howell advises letting breakouts run their course naturally. If you’re struggling with the urge to pick, using hydrocolloid patches can help break the habit. Trust the process—your skin is healing even if it doesn’t look like it yet.

Interested in an Accutane prescription?

Consult a dermatologist

How long does the Accutane purge last?

Dr. Howell says that the Accutane purge usually lasts 2 to 6 weeks, but it can vary. For some, it may be over in a couple of weeks; for others, it can stretch into the second month. It’s important to remember this phase is temporary and typically followed by noticeable skin improvement.

Accutane purge timeline

Week 1–2: You notice the first early reactions towards Accutane (isotretinoin)

This is when the purge first begins, though not everyone experiences it this early. The medication starts to work under the skin’s surface by:

Speeding up skin cell turnover, which pushes oil, bacteria, and clogged debris to the surface faster.
Reducing oil production, which may suddenly leave your skin feeling dry, tight, or flaky, especially around the mouth, nose, and eyes.
Increasing inflammation temporarily, which can make breakouts appear more red and angry-looking.
You may also experience other side effects like chapped lips, dry eyes, skin and nose, as well as sun sensitivity.

Dermatologist’s Tip: Use a thick moisturizer and avoid exfoliants.

Week 3–4: The peak of the Accutane (isotretinoin) purge

If you’re going to purge, Dr. Howell says this is when it’s likely to be at its worst:

Deeper breakouts, especially if you’re prone to cystic acne.
New pimples appear, often in areas where you already had active acne.
More redness and skin inflammation than before.
The dryness and irritation may intensify, making it uncomfortable to wear makeup or shave.

Dermatologist’s Tip: Use an over the counter antihistamine to minimize your symptoms and consult your dermatologist to get a temporary prescription for an oral steroid if your skin flares severely.

Week 5–6: The Turning Point

For many, this is when they start seeing an improvement in their acne.

Less new breakouts
Older acne lesions start to heal and flatten out.
Inflammation typically begins to reduce.
Overall irritation starts to calm.

Dermatologist’s Tip: Continue sun protection, hydration, and gentle skincare.

After Week 6: Visible improvements begin

By this point, many people see noticeable improvement:

Breakouts become much less frequent or stop altogether.
The skin begins to look smoother, less congested, and more even in tone.
Red marks from older acne may still be visible (called post-inflammatory erythema or hyperpigmentation), but active acne is significantly reduced.
Side effects may persist (like dryness), but they tend to be more manageable.

Dermatologist’s Tip: Continue sun protection, hydration, and gentle skincare.

How to prevent purging on Accutane?

Dr. Howell says that while you can’t fully prevent the Accutane purge, preparing for the Accutane purge can make a big difference in how you feel physically and emotionally during treatment. Here’s a detailed checklist to help you feel ready and supported from day one:

Start treatment during a low-stress period
If possible, begin Accutane when your schedule is calm (like during school breaks), work downtime, or after major life events. This gives you space to be alone if you need to without added pressure.
Talk to your dermatologist about a low-dose start
Starting Accutane at a low dose can help reduce the severity of the purge and side effects. Your dermatologist can gradually increase the dose as your skin adapts.
Prep your skin
Stop using any harsh ingredients (like retinoids, AHAs, or BHAs) a week or two before starting. Stick to a gentle cleanser, barrier-repair moisturizer, and SPF 50+.
Stock up on hydrating essentials
Accutane dries out more than just your skin—lips, eyes, nose, and joints too. You’ll want:
- Thick lip balm (Aquaphor, CeraVe Healing Ointment)
- Fragrance-free facial moisturizer
- Gentle body lotion
- Artificial tears or eye drops
- Nasal saline spray (for dry nose or nosebleeds)
- Buy a humidifier (especially in dry climates or winter months)
Buy OTC antihistamines
Taking non-drowsy antihistamines like Claritin, Zyrtec, or Allegra can help reduce inflammation, itching, and purge-related flare-ups. Talk to your dermatologist before starting.
Wash your pillowcase and towel more often
Change pillowcases every few days and use a clean towel every day to avoid bacteria buildup.
Mentally prepare
Knowing that the purge is normal and temporary can reduce anxiety. Read success stories, join support forums, or keep a journal to stay grounded and hopeful.
Keep track your skin’s progress
Use the Miiskin app to take weekly photos to monitor changes in your skin. Even when your skin feels worse, the photos can help you see subtle improvements and keep you motivated.
Communicate with your dermatologist
If you choose a dermatologist via Miiskin, you can use the messaging functionality available in the app to ask questions about your symptoms or treatment to your dermatologist. Let them know about any side effects, even mild ones. They can adjust your dose, recommend additional treatments, or reassure you through tough phases.

Frequently asked questions about the Accutane (isotretinoin) purge

Dr. Eric Howell, board-certified dermatologist answers common questions people have about the Accutane purge.

What is the isotretinoin purging period?

The isotretinoin purging period is the temporary phase when acne may worsen after starting isotretinoin. According to Dr. Eric Howell, the Accutane purge usually lasts 2 to 6 weeks, although it varies from person to person. For some people it may resolve within a couple of weeks, while for others it can continue into the second month. After this period, many people begin to notice fewer breakouts and an overall improvement in their acne.

How to stop the Accutane purge?

You cannot necessarily stop an Accutane purge completely, but you may be able to reduce the likelihood or severity of a flare. Dr. Howell recommends discussing starting isotretinoin at a lower dose and gradually increasing it with your dermatologist, particularly if you have severe or cystic acne.

If a purge occurs, maintaining a gentle skincare routine, avoiding picking or squeezing pimples, using non-comedogenic products, and keeping the skin well moisturized can help minimize irritation. In some cases, a dermatologist may recommend an antihistamine or prescribe a short course of an oral corticosteroid for a severe inflammatory flare. Any changes to your medication or additional treatments should be discussed with your dermatologist.

What is the Accutane purge phase?

The Accutane purge phase is a temporary worsening of acne shortly after starting isotretinoin treatment. During this period, you may develop more breakouts, deeper or more inflamed pimples, redness, dryness, peeling and irritation.

Isotretinoin changes oil production, skin-cell turnover and inflammation in the skin. These changes can temporarily make existing acne appear worse before it improves. Importantly, not everyone who takes isotretinoin experiences a purge.

What percentage of people purge on Accutane?

Studies indicate that up to 32% of patients may experience an initial acne flare during the first month of isotretinoin treatment. This means that most people taking isotretinoin do not experience an initial purge. When a flare does occur, its severity varies, with most reported flares being mild to moderate.

Factors including acne severity, age, sex and isotretinoin dosage may influence the likelihood and severity of an initial flare.

What's the worst month on Accutane?

If you experience an Accutane purge, the first month is typically the most difficult, with the purge often reaching its peak around weeks 3 to 4. According to Dr. Howell, this is when deeper breakouts, new pimples, redness and inflammation may be most noticeable. Dryness and irritation can also intensify during this period.

By weeks 5 to 6, many people reach a turning point, with fewer new breakouts and existing acne beginning to heal. However, everyone responds differently to isotretinoin, so there is no single “worst month” for every patient.

Why does taking an antihistamine help with the Accutane purge?

Antihistamines may help reduce some of the inflammation associated with isotretinoin treatment by blocking the effects of histamine, a chemical involved in inflammatory and allergic responses. Dr. Howell explains that this may help relieve symptoms such as redness, itching and irritation during the purge.

There is also clinical evidence supporting antihistamines as an add-on to isotretinoin. In a randomized controlled study of 40 patients with moderate acne, patients receiving isotretinoin plus the antihistamine experienced acne flares less frequently than those taking isotretinoin alone. The combination group also showed greater reductions in acne lesions, sebum and redness after 12 weeks. However, this was a small study, so more research is needed to establish how effective antihistamines are for preventing isotretinoin flares.

Talk to your dermatologist before adding an antihistamine or other medication to your isotretinoin treatment.

When is the isotretinoin purge the worst?

The isotretinoin purge is generally at its worst around weeks 3 to 4 after starting treatment, if a purge occurs. During this peak period, breakouts may become deeper or more inflamed, new pimples may appear, and redness, dryness and irritation can become more noticeable.

For many people, symptoms begin improving around weeks 5 to 6, followed by more noticeable improvements after week 6. The timing varies, however, and some people do not experience an isotretinoin purge at all.

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Article References:
https://pmc.ncbi.nlm.nih.gov/articles/PMC2835909/
https://www.researchgate.net/publication/5282140_Predictive_factors_for_acne_flare_during_isotretinoin_treatment
https://pubmed.ncbi.nlm.nih.gov/18573721/
https://pubmed.ncbi.nlm.nih.gov/25081735/
https://www.sciencedirect.com/science/article/pii/S2950198924000308
https://www.medicaljournals.se/acta/content/html/10.2340/00015555-1325