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Lush bath bomb: See how it's made from start to finish

There's a reason why some beauty products become cult classics: They're iconic to the brand, timeless and have an extra special "it" factor that makes it one of a kind. The bath bomb by U.K.-based cosmetics retailer Lush certainly fits in that exceptional category.

As part of a new series called "The Follow" — where we investigate how one product is created from start to finish — TODAY Style visited the Lush factory in Toronto to watch how these magical bath-time treats are made.

What is a bath bomb?

In short, it's a bubble bath-maker that fizzes, bubbles and explodes when dropped into warm water. These wondrous balls of soap come in all varieties, with some containing dried flowers, cocoa butter, sea salt or even explosions of glitter in the middle that get released at the end of a bath.

The Intergalactic Bath Bomb, which we got to see in the making, is a best-seller that offers an "out of this world" experience with its sudsy formula, neon colors, gold glitter and popping candy (more on that later).

Samantha Okazaki / TODAY
3, 2, 1 ... blast off!

RELATED: See the 'bubble' face mask in action

What are bath bombs made of?

Bath bombs are basically made of baking soda, Lush's special "bubble mix" (we didn't get all the secrets), citric acid and a mix of essential oils to impart a particular scent and feel. The Intergalactic Bath Bomb adds colorful dye pigment and gold glitter to get that swirly "constellation" effect in the water. The popping candy — yes, like the candy you put on your tongue as a kid! — adds extra fizz and texture to the water.

Samantha Okazaki / TODAY
The Intergalactic Bath Bomb in action. Say it all together now: "Ooooooh, ahhhhh."

How do they make bath bombs?

The process is as fascinating as it is beautiful!

It starts by mixing baking soda, essential oils and bubble mix together. Then dye pigment and hot water are added to get three distinct colors: pink, yellow and blue. The blue powder, which makes up the majority of the bath bomb, gets gold glitter and popping candy added to it as well.

With a pinch of citric acid to help the powders pack together, the three colors are layered on both sides of a mold. An egg-shaped "insert" (with more of the original baking soda mixture)) is added in the middle with an scoop of blue powder before the two sides of the mold get smashed together. Once it's taken out of the mold, the finished bath bomb is ready to sell in a Lush location near you!

Samantha Okazaki / TODAY
Pack it up ... and voila!

RELATED: Here's what happened when I tried Lush Shower Jellies — the weirdest soap on the internet

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Test Drive: See the Shower Jellies that have the Internet bouncing with delight

Play Video - 0:39

Test Drive: See the Shower Jellies that have the Internet bouncing with delight

Play Video - 0:39
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