Shereene IdrissBoard Certified Derm, Founder and Chief Nerd

THIS can save your pet’s life.

7 Oct 2026 · 2 min

Watch on YouTube

1:41

In this short PSA, Shereene Idriss warns that topical minoxidil, a common over‑the‑counter hair‑loss treatment, can be lethal to cats and dogs if transferred from a user’s hands, hair, or pillowcase. She recounts a tragic anecdote from Speaker A, whose 2‑year‑old cat died after exposure, to illustrate the danger. Idriss explains how minoxidil can spread via wet hair, hand contact, and contaminated surfaces, and she outlines three concrete safety steps: wash hands with soap and water after application, promptly clean any spills, and ensure hair is completely dry before sleeping on a pillow. If these precautions are impractical, she suggests discussing oral minoxidil with a physician, noting its convenience but also its own side‑effect profile. Finally, she criticizes the lack of prominent pet‑warning labels on topical minoxidil packaging and urges consumers to demand clearer warnings.

Chapters

Minoxidil will kill your pets. About 3 days ago, I had to put down my 2-year-old cat Halo.
This message could save your pet's life, and consider this a PSA because your pet does not need to be drinking from the bottle to get exposed. You see, we're putting this on our scalp, a little bit gets on our hands, we're going to touch the counter, we're then going to put our wet hair on our pillowcase, and all of that is going to transfer. And if your cat sleeps on that pillow next to you and then grooms itself, that minoxidil can be extremely dangerous and toxic to the pets, especially your cats. I want you to start thinking of this as a serious medication and not some over-the-counter fluff. Here are 3 things to ensure the safety of your pets. Make sure to wash your hands with soap and water after you use this because that can transfer to your pet. If it spills, I want you to clean it up immediately and don't just let it sit on the counter. And make sure that your hair is completely dry before you go to bed and put your head on your pillowcase because that can still transfer to your cat. And cats and dogs love to snuggle while sleeping on your pillow. But if doing these 3 things is really impossible for you to achieve and you cannot ensure the safety of your pets, then it is worth discussing you going on an oral form of minoxidil with your doctor. Which, by the way, I am on because it is so much easier to be consistent with every single day than trying to remember to use this and then to style my hair. But obviously the oral form comes with other side effects, so it is not necessarily a green light for everybody. At the end of the day, what bothers me the most about the topical form of minoxidil is that There is hardly any visible pet warning on this box, and this message that you are listening to right now could save your pet's life. You really should push for larger pet warnings on this box.