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Accutane works by dramatically reducing oil gland activity in the skin. This is what makes it so effective for severe acne, but those same oil glands in your scalp play a role in keeping your follicles healthy. When isotretinoin suppresses them, it can disrupt the hair growth cycle in two key ways.<\/strong><\/p>\n The most common is telogen effluvium. This is when a physical stressor, in this case the medication, causes a large number of follicles to shift prematurely into the resting phase. A few months later, those follicles shed at the same time, which is when you notice increased hair fall. Research published in Skin: The Journal of Cutaneous Medicine<\/a> confirms telogen effluvium as the primary mechanism, with retinoids thought to arrest the anagen (growth) phase and impair how hair is anchored during the resting phase.<\/p>\n Beyond that, a 2018 study in the Journal of the European Academy of Dermatology and Venereology<\/a> found that isotretinoin directly affects the hair cycle at a cellular level, further supporting the link between the drug and follicle disruption.<\/p>\n Less common than most people fear. A systematic review of 22 studies published in the Journal of the American Academy of Dermatology<\/a> found that hair loss occurred in about 3.2% of patients on lower doses and 5.7% of patients on higher doses.<\/p>\n That said, these numbers likely reflect clinically documented cases. Milder shedding that patients manage at home probably goes underreported. A separate retrospective study<\/a> found that patients who did experience hair loss tended to be older, had higher cumulative doses, and had been on treatment for longer.<\/p>\n The takeaway is that dose matters. If hair loss is a concern for you, it is worth talking to your prescribing doctor about whether your dose can be adjusted.<\/p>\n Accutane-related hair loss is usually diffuse, meaning it affects the whole scalp rather than specific patches or a receding hairline. You may notice your ponytail feels thinner, more hair on your pillow, or increased shedding when washing. The scalp may also feel drier or more sensitive than usual.<\/p>\n Shedding typically begins two to four months after starting treatment, though some patients do not notice it until they are finishing their course.<\/p>\n<\/div>\nHow Common Is It?<\/h2>\n
What Does It Look and Feel Like?<\/h2>\n