Liquid Castile soap is an oil-based soap that can be adapted for everything from personal cleansing to household cleaning. Learn how olive, coconut and other oils affect cleansing, lather and thickness, why different Castile soaps behave differently, and how to choose the right character of soap for the job.
Concentrated Castile soap and Castile soap diluted with water do not have the same storage considerations. Learn why adding water changes the preservation question, especially when a product will be stored for longer or sold.
Liquid Castile soap can be used for everything from personal cleansing to pet washing and household cleaning—but that does not mean one soap is ideal for every job. Learn why the oils and cleansing strength should be chosen according to the intended use.
Liquid Castile soap can sometimes appear cloudy even when you expected a clear product. Learn how bubbles from mixing, resting time and essential oils can affect clarity—and why appearance needs to be interpreted in context.
Glycerin can change both the feel and consistency of liquid Castile soap. Learn why it is used, how it differs from simply diluting with water, and why more glycerin does not necessarily produce more lather.
Liquid Castile soap can be used to wash hair, but that does not mean it will behave or feel like a conventional shampoo. Learn why its alkaline nature matters, what you may notice after washing, and why simply lowering the pH is not the answer.
A soap that produces lots of bubbles can feel more cleansing, but lather and cleansing are not the same thing. Learn why different oils create very different lather and why more foam is not always desirable.
Olive oil and coconut oil can both be used for liquid Castile soap, but they produce very different soaps. Learn how they compare in cleansing, lather and thickness—and why the better choice depends on what you want the soap to do.
Liquid Castile soap can range from surprisingly thick to almost watery, and thickness does not tell you how well it cleans or lathers. Learn why the oils used make such a difference to the consistency of the finished soap.
