Not a haircare formulator, but here’s my thoughts:
1. The ‘mechanism’ as far as I know is alcohol or starches absorbing oil/sebum and giving hair a more matte appearance.
2. Anyone who would like to skip washing their hair occasionally. If you’re asking about target demographic probably younger women with long hair
3. I’m not sure on this, I think a spray would likely get more uniform widespread coverage but probably comes down to the specific packaging/formula.
4. You should take a look at big brands that are in this space and read their ingredient labels. You can also look at amazon/ulta/sephora top sellers online.
https://www.pantene.co.uk/en-gb/hair-tips/hair-care/how-does-dry-shampoo-work/
pantene.co.uk
How does dry shampoo work?
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