If you’ve ever struggled with stubborn acne, prominent signs of aging, or dark spots that just won’t fade, you may already be familiar with tretinoin—a prescription-strength topical medication that can help address practically any skin concern. As far as topical ingredients go, tretinoin’s metaphorical resume is already pretty stacked.
But in recent years, social media users have claimed in Reddit threads, TikTok videos and Instagram reels that the ingredient deserves yet another accolade for its ability to help support hair growth. “Applying your tretinoin to your hair will help grow back your hair faster than anything else,” one TikTok user wrote in a video.
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