No scientific proof at all but it feels like washing powder does a much better job at removing stains than washing liquid.
It also seems more and more difficult to find washing powder in store as manufacturers are moving to liquid and even more a rip off - pods. Don’t get me started on these money spinners.
What is your experience and what works best?
It supposedly has an edge in terms of pulling out oils in particular.
My problem is that, as you said, it’s harder to find, and I have a limitation in what I can use to begin with.
I can’t say, when I have used a powder vs a liquid in the past that the difference is so significant that I would bother to hunt down a powder that also fits my niche needs. But if you’re not limited, I would say it’s worth it on average