Roaccutane: can this acne medication make the nose thinner?

Roaccutane, whose active ingredient is isotretinoin, is a medication used to treat severe or treatment-resistant forms of acne, when standard treatments (antibiotics, topical therapies) prove insufficient. This retinoid acts on several mechanisms involved in acne. It markedly reduces sebum production by decreasing the size and activity of the sebaceous glands, limits blockage of hair follicles, has an anti-inflammatory effect, and slows the proliferation of Cutibacterium acnes. The goal of treatment is to reach a cumulative dose, meaning the total amount of isotretinoin given over the entire course, generally between 120 and 150 mg per kilogram of body weight, which helps maximize effectiveness and reduce the risk of relapse. A course of Roaccutane usually lasts between 4 and 10 months, depending on the daily dose taken.

Over the past few years, some dermatologists have observed an increase in isotretinoin prescriptions.

Several factors may explain this trend: better knowledge of the drug and its effectiveness, a desire to prevent acne scars by intervening earlier, and a growing demand from patients for rapid and effective treatments. Isotretinoin remains, in fact, one of the most effective treatments for severe acne. However, studies show that about 30% of patients may experience a relapse after completing a treatment course. In most cases, the acne returns in a milder form, and it is sometimes possible to undergo another course of treatment if necessary.

Despite its effectiveness, Roaccutane remains a powerful treatment that must not be taken lightly. Isotretinoin can cause numerous side effects, the most common being significant dryness of the skin and mucous membranes (chapped lips, dry skin, irritated eyes, etc.). Other, less common but potentially serious effects can also occur and require regular medical monitoring. The medication is particularly strictly contraindicated during pregnancy because of its teratogenic effect, which implies strict contraceptive measures for patients of childbearing potential and a monthly blood test to confirm the absence of pregnancy.

Isotretinoin must always be prescribed and monitored by a dermatologist, with careful medical follow-up. This medication is only available by prescription, and it is dispensed only upon presentation of a negative pregnancy test performed within the previous three days.

Note : The term Roaccutane is often used to refer to this treatment, but it is actually a brand name. Isotretinoin is also marketed under other names, including Contracné, Curacné, Isotretinoin Acnetrait, and Procuta.

For the past few years, the idea that Roaccutane could slim down the nose has been spreading widely on social media, to the point that some people even talk about an "Accutane rhinoplasty." This hypothesis is based on a biologically plausible mechanism: isotretinoin greatly reduces the activity and size of the sebaceous glands and decreases sebum production, which gradually leads to a thinning of the skin, especially in people with thick, oily skin. Since the skin of the nose contains many sebaceous glands, some patients feel that their nose looks slightly slimmer during the course of treatment.

Some scientific studies have indeed observed changes in the thickness of the skin of the nose under isotretinoin. For example, a study conducted in 40 patients with acne treated with isotretinoin (0.25 or 0.5 mg/kg/day) for four months evaluated the thickness of the nasal skin by ultrasound. The results showed a significant decrease in the thickness of the dermis and subcutaneous tissues in different areas of the nose, regardless of the dose used. At the same time, elastography measurements showed an increase in skin elasticity at the fourth month of treatment, suggesting an improvement in certain mechanical properties of the skin. However, the study did not include post-treatment follow-up, so it is not known what happens six, eight, or twelve months after stopping Roaccutane.

That said, these observations are of particular interest to surgeons in the context of rhinoplasty. In patients with thick nasal skin, isotretinoin can sometimes be used before or after the procedure to improve the definition of the nasal contours. A scientific review published in 2024 suggests that the use of isotretinoin around the time of surgery could improve patients’ cosmetic satisfaction during the six months following the operation. However, the results remain variable: only a few studies report a persistent benefit beyond one year, and the protocols used differ greatly from one study to another. The authors emphasize that the scientific evidence remains limited, particularly because of the small sample sizes and the lack of long-term follow-up.

It is therefore important to emphasize that, although some changes in the skin of the nose may occur during treatment with isotretinoin, this medication is not intended to alter the shape of the nose.

Roaccutane is first and foremost a medical treatment for severe acne, prescribed within a specific dermatological framework and under medical supervision. In certain particular situations, such as rhinophyma, reducing the activity of the sebaceous glands can improve the appearance of the skin. However, isotretinoin must never be used for a purely cosmetic purpose, and its benefit–risk balance must always be assessed by a healthcare professional.

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