Buy the powdered/dehydrated/concentrated/bar version

I can't remember how I first came to this realization, but I know I felt terribly scammed when I first understood that many household cleaning and personal care products are, by volume, mostly just water. You are paying your precious pennies for water, you are wasting countless tons of virgin plastic storing water, and multinational corporations are burning unknowable amounts of fossil fuels on shipping (mostly) water back and forth around the world on your behalf. Go look at the ingredient list on your liquid soaps, shampoos and conditioners, detergents, cleaning sprays, etc. etc. and you, too, will likely see water (or, if ya nasty, 'Aqua') as the first ingredient. There, now you can feel scammed, too.

Blessedly, most of us have access to water in our very own homes and therefore you can still use most of these products because a lot of things come in powdered/dehydrated/bar versions to which you can add your own water. I'm no chemist, but I believe I can add water and shake as good as the next guy (ok, maybe not as good as a very good bartender, but still, pretty good). I have no particular endorsements but my sense is that most of these waterless things are perfectly good*, if not better than the water-ful things they replace. Also, the fine makers of many waterless products also minimize or avoid plastic packaging for their waterless products because it's cheaper for them and not required for shipping, which is a win-win, imho.

*I specifically do not rec the powder version of Blueland dish soap which is cursed and has too-fine particles that are impossible to avoid inhaling and which requires too frequent reapplication on the sponge.

**but I will not give up my Korean skincare that is also probably mostly water but a little bit magic, and yes, I realize the inconsistency ¯\_(ツ)_/¯ pobody's nerfect, man!