How-to
How to Use Castile Soap: Dilutions for 15 Everyday Uses
Liquid castile soap is famously versatile, but it is very concentrated. Here is how much to use for washing, cleaning, dishes and laundry, plus the mistakes to avoid.
Soap Care
Make your soap last longer, store it well and waste less: dishes, drying, curing and plastic-free habits.
5 articles
Small habits make a bar last longer and keep your bathroom cleaner. Start with how to use castile soap for its many household uses, then learn how to deal with hard water and soap scum and when bar or liquid hand soap makes more sense.
Start here
Hard Water and Soap: Why You Get Soap Scum
Hard water makes soap lather poorly and leaves scum on your skin and shower. Here is why, and what you can do about it.
Comparison
Bar Soap vs Liquid Hand Soap: Which Is More Hygienic?
Do germs live on bar soap? Here is what research says about bar soap hygiene, how it compares to liquid hand soap, and how to choose for your sink.
How-to
How to Wash Your Hands Properly (and Which Soap to Use)
The five simple handwashing steps public health experts recommend, how long to scrub, and whether bar soap, liquid soap or natural soap works best.
More in this topic
Can You Bring Bar Soap on a Plane? TSA Rules Explained
Yes. Solid bar soap is allowed in both carry-on and checked bags, with no size limit. Here is how the TSA rules work and how to pack soap neatly.