What’s the chemistry behind hairspray?

**Hairspray seems simple… until you actually stop and think about it.** How does it come out as a fine mist? Why doesn’t it dry up inside the can? How can it hold your hair in place without acting like glue? This week we’re unpacking the surprisingly clever chemistry behind one of the most common products in our homes—and discovering it’s far more complicated than either of us expected. **[Support this podcast on Patreon](http://patreon.com/chemforyourlife " Support this podcast on Patreon ") [Buy Podcast Merch and Apparel](http://chemforyourlife.com/store " Support this podcast on Patreon ")** Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife **Timestamps** - **0:00** – A question inspired by our forensics episode: what *is* hairspray? - **4:40** – The three ingredients inside a can of hairspray - **10:40** – How the propellant turns liquid into a fine aerosol spray - **18:30** – How polymers create an invisible “hairnet” - **29:00** – Why designing hairspray is harder than you might expect - **36:20** – How hairspray compares to gel and mousse - **45:50** – Fun categories: movies, cast iron, and things that turned out to be more complicated than expected **References from the Episode:** **Thanks to our monthly supporters** Sara Hull Dog Day Dan Bri . Summer Alden Amanda Raymond Kyle McCray Justine Ash Vince W Julie S. Heather Ragusa Autoclave Dorien VD Scott Beyer Jessie Reder J0HNTR0Y Cullyn R Erica Bee Elizabeth P Rachel Reina Letila Katrina Barnum-Huckins Suzanne Phillips Venus Rebholz Jacob Taber Brian Kimball Kristina Gotfredsen Timothy Parker Steven Boyles Chris Skupien Chelsea B Avishai Barnoy Hunter Reardon **[Support this podcast on Patreon](http://patreon.com/chemforyourlife " Support this podcast on Patreon ") [Buy Podcast Merch and Apparel](http://chemforyourlife.com/store " Support this podcast on Patreon ")** Check out our website at chemforyourlife.com Watch our episodes on YouTube Find us on Instagram, Twitter, and Facebook @ChemForYourLife Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.