Why does shampoo bubble up WAY more the second time you apply it?

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When I’m in the shower, sometimes I’ll notice my hair is particularly greasy and once I’ve rinsed off the first round of shampoo, I’ll apply a second round. And no matter how small of an amount I apply the second time around, it turns into a baby bubble bath commercial with oodles of suds and bubbles and foam all over the place?

Is it because the first lot got used up on a larger bulk of grease and the second amount doesn’t and so it can bubble up more?

In: Chemistry

10 Answers

Anonymous 0 Comments

First shampoo is basically just loosening the grease and dirt and the second is the one that actually removes dirt. So even when the first one isn’t lathering you should still continue to scrub/massage as normal.

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