Is Accutane Permanent? Relapse Rates and Second Courses

If you’re on Accutane (isotretinoin), you might be wondering whether one course is enough, and the honest answer is that it depends. The goal is long-term remission, not a cure, and dose, length of treatment, and other variables all play a role in relapse rates.

This article covers what the research says about isotretinoin’s long-term results, relapses, and second courses.

Is Accutane Permanent?

For most people, one course of Accutane (isotretinoin) does produce long-term remission, but it isn’t a guaranteed permanent cure. A 2025 analysis of 19,907 patients found that about 77% had no relapse after a single course, and about 92% never needed a second course of isotretinoin.

Lai & Barbieri (2025). JAMA Dermatology

A review of 30 years of use puts long-term remission from a single course at 70 to 80% of patients.

The FDA label itself uses the phrase “complete and prolonged remission of disease in many patients” for a single course of 15 to 20 weeks, which is a careful way of saying the same thing: prolonged in many, but not permanent in all.

Why Does Acne Come Back After Accutane?

Accutane (isotretinoin) works by shrinking the oil glands and decreasing how much sebum (oil) they make. It doesn’t change the things that made your glands overactive in the first place, like your hormones or genetics.

Does Accutane permanently shrink oil glands, then? Not entirely. The FDA label describes the drop in oil production as temporary and tied to the dose and how long you take it, and the glands recover some of their activity once you stop.

US Food and Drug Administration (2002). Accutane label

For most people, the glands stay quiet enough that acne doesn’t return, but others have a strong enough underlying driver that it does come back. Factors like total dose and how long the glands stay suppressed during treatment play a role.

The Real Relapse Numbers

Different studies define “relapse” differently: some count any return of acne that needs a prescription, while others only count patients who needed a second course of isotretinoin. Here’s how the main studies compare:

Study	Patients	Relapse	Second course of isotretinoin
Lai & Barbieri, 2025 (insurance claims, US)	19,907	22.5% needed any prescription acne treatment again	8.2%
Blasiak et al., 2013 (prospective, US)	116 followed at 12 months	32.7%	1.7%
Saadet, 2021 (clinic records, Turkey)	212	37.3%	Not reported
Rademaker, 2016 (clinic records, New Zealand)	1,453	Not reported	22.4%

When acne does come back, it usually isn’t immediate. In the Turkish study, the median time to relapse was 10 months after finishing treatment.

Late relapse is uncommon, though. One study that followed 88 patients for up to 10 years found that 96% of those who relapsed did so within 3 years of finishing treatment.

Layton et al. (1993). British Journal of Dermatology

Ultimately, around 1 in every 4 to 5 patients will need some acne treatment again, but fewer than 1 in 10 will need isotretinoin again. It’s also important to remember that a relapse doesn’t mean you’re back where you started. Many relapses are milder than the original acne and respond well to topical treatment, which is why the “any prescription” number in the studies is so much higher than the “second course” number.

How to Tell if Acne Is Coming Back After Accutane

Skin on Accutane (isotretinoin) is usually unusually clear, so if you get a pimple or two after a stressful week once you’ve finished, that’s normal skin behavior, not necessarily a relapse. The studies above counted relapse as acne that needed prescription treatment again, not the odd breakout.

If you’re seeing a pattern of more frequent breakouts month after month, deep or painful lesions, or acne returning in your old problem areas, it’s worth catching early and discussing with your medical provider.

What Lowers Your Relapse Odds

There are three main schools of thought on how to dose isotretinoin to keep acne away, and they overlap more than they disagree.

The cumulative dose target: The conventional approach is a daily dose of 0.5 to 1 mg/kg until you’ve reached a cumulative total of 120 to 150 mg/kg over the course.

A higher cumulative dose: In the 2025 study, every extra mg/kg of cumulative dose lowered the relapse rate a little, and the benefit kept accruing up to around 220 mg/kg before it plateaued.

Lai & Barbieri (2025). JAMA Dermatology

Treating past clearance: Some argue that the total dose matters less than how long the oil glands stay suppressed after the skin clears. A review of 1,453 patients found that neither daily nor cumulative dose affected relapse as long as treatment continued for at least two months after the acne had completely resolved.

Rademaker (2016). International Journal of Dermatology

Overall, these three approaches point in the same direction: don’t stop as soon as your skin looks good, and don’t finish a course short of your target just because your acne seems to be gone. Our cumulative dose calculator shows where you are.

What target dose is right for you, and whether to aim higher, lower, shorter or longer, is a decision for your medical provider, who weighs it against things like side effects, bloodwork, and your personal situation.

Note: taking isotretinoin with a high-fat meal more than doubled both peak blood levels and total exposure in the label’s study, which is why the label states that isotretinoin should always be taken with food.

Who Relapses More

Studies do show some patterns in who may be more likely to relapse after isotretinoin treatment:

• Younger patients: Relapse was more common in patients aged 20 or younger in one study, and a 30-year review flagged both those under 14 and those over 25 as higher risk.
• Women: In the 2025 study, female patients had a 43% higher relapse rate, although they were less likely to be retreated with isotretinoin, which suggests their relapses were often managed with other options. This is the pattern behind the question of whether Accutane works for hormonal acne.
• Severe acne: Acne dominated by large, deep comedones, and acne still present at the end of treatment, relapsed more often.
• Acne on the chest and back: In the 10-year follow-up, patients with mainly truncal acne, especially when severe, relapsed more often.
• Lower doses: The FDA label notes that in trials comparing 0.1, 0.5, and 1 mg/kg/day, all doses cleared the acne initially, but the lower doses led to a greater need for retreatment.

Saadet (2021). Dermatologic Therapy

These factors don’t mean you shouldn’t take isotretinoin, but they are something for you and your medical provider to discuss, alongside factors you can control, like not smoking (another relapse flag) and making sure acne fully clears before stopping treatment. Knowing them can also help set expectations, before you start, about whether you might need a second course.

What to Do if Acne Comes Back

If acne returns, you have options. Milder relapses can often be managed with topical treatment, usually a retinoid like tretinoin. For more persistent relapses, women may discuss hormonal options such as spironolactone or combined oral contraceptives with their provider, especially if the acne follows a hormonal pattern. For both men and women, acne that returns severe, persistent, scarring, or resistant to other treatment is where a second course of isotretinoin comes in.

Reynolds et al. (2024). Journal of the American Academy of Dermatology

Which option fits depends on how severe the returning acne is and on your goals, and it’s ultimately your provider’s decision.

Second Courses Are Normal

If acne returns, a second course is a normal part of how isotretinoin is used. It doesn’t mean something went wrong; some people just need a second course for longer-term remission. The FDA label states that a second course may be started if severe nodular acne persists or recurs, but you need to wait at least 8 weeks after the first course ends, because patients often keep improving after stopping the medication.

Multiple courses aren’t rare: one series followed 299 patients for five years and found that 17% needed 2 courses, 5% needed 3, and 1% needed 4 or 5. Factors linked to needing more than one course included lower-dose regimens, severe acne, being a woman over 25, and a long history of acne.

Paichitrojjana et al. (2023). Drug Design, Development and Therapy

A second course runs the same way as the first: the same monthly check-ins, the same blood tests, and the same iPLEDGE requirements. Whether it’s the right next step, or whether a milder relapse is better handled with topicals or another option, is a decision for your prescriber based on how the acne has come back.

Keeping Acne Away After Your Course

After Accutane (isotretinoin), there’s reasonable evidence that a topical retinoid can help hold the result. In one study, 139 patients used isotretinoin until their skin was clear and then used adapalene for a year, and only 9.35% had relapsed two years later.

Borghi et al. (2011). Journal of the European Academy of Dermatology and Venereology

A second study used adapalene with benzoyl peroxide for 12 months after isotretinoin, and 2.94% of 68 patients relapsed in that time.

Neither study had a comparison group, so they can’t prove that the retinoid kept acne away, but the relapse rates are well below what the larger studies report, and a topical retinoid is a low-risk thing to ask your provider about once your skin has recovered from the course. Options include adapalene and tretinoin; there’s more on how they work in our tretinoin guide.

How to Get Prescribed Isotretinoin (Accutane) Online

If you’re wondering how or where to get isotretinoin, Happyglow connects you with US-licensed physicians who decide whether starting isotretinoin is right for you, entirely online.

1. Start your visit. Answer a few questions about your health and goals (~5 min).
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