Skip to main content

Up Next

How Does Xanax Work?

How Does Xanax Work?

Season 4 Episode 36
4:07
Why Do Some People Hate Cilantro?

Why Do Some People Hate Cilantro?

Season 4 Episode 37
2:44
The One Where We Put Stuff in Acid

The One Where We Put Stuff in Acid

Season 4 Episode 38
5:13
The Periodic Table Table

The Periodic Table Table

Season 4 Episode 39
5:39
We Are Made of Star Stuff

We Are Made of Star Stuff

Season 10 Episode 3
10:13
I Reinvented a 300-Year Old Drink

I Reinvented a 300-Year Old Drink

Season 10 Episode 4
16:56
This (Edible) Mushroom Could Kill You

This (Edible) Mushroom Could Kill You

Season 10 Episode 7
17:23
This Video is About Electroadhesion

This Video is About Electroadhesion

Season 10 Episode 9
14:04
Back to Show
Reactions

How Do Hand Sanitizers Work?

Season 4 Episode 35

The labels always read, "Kills 99.99% of Germs!" but does the science of hand sanitizers back it up? Today Reactions takes a closer look at the chemistry of what this goo is made of, and just how effective it really is against viruses and bacteria. Yay chemistry!

Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By
Season
What Could An Explosion On the Sun Do Here On Earth?
12:24
We talk about how this can affect us all the way down here on Earth.
Whatever Happened to the Ozone Hole?
12:11
We explore how we might keep ourselves and our food cool without overheating the earth.
What Meteors Reveal About Earth’s Hidden Past
13:33
We explore meteors and asteroids, and why they should matter to us.
The Invisible Tsunami That Killed 1,500 People in One Night
11:28
We investigate how a lake could explode and shoot out a gigantic wave of deadly CO2.
The Terrifying (but Awesome) Science Behind Red Tides
11:39
We dive into the science behind this somewhat terrifying, sometimes glowing phenomenon.
The Great MOLASSES Flood of 1919
12:52
We get into the science behind what created that 25 foot wave!
Challenger: The Real Story of an Avoidable Disaster
14:37
We explain the science behind this tragic, avoidable accident.
The Loneliest Whale
15:21
we bring you the story of the Loneliest Whale and other fascinating mammals.
The Ultimate Coffee Roasting Chemistry Throwdown
10:33
How hard could roasting beans at home really be?
You’re Using Disinfectants Wrong
6:11
Doing these 3 things are critical.
How Does Tear Gas Work?
3:53
And did you know it's not actually a gas? We investigate.
We Surprised a Llama Antibody Researcher with a Llama
2:33
Scientists are considering some less-conventional approaches to tackle COVID-19.
Active loading indicator