Definition of Castile soap in English:
Fine, hard white or mottled soap made with olive oil and sodium hydroxide.
- Often based on pure Castile soap, natural shampoos are usually combined with high-quality herbs and plant oils that leave your hair and scalp healthier.
- Because of its mildness, Castile soap became the soap of choice for babies and those with sensitive skin.
- Our soaps are made using a traditional Castile soap formula from the 19th century.
Late Middle English: named after Castile in Spain, where it was originally made.
Definition of Castile soap in:
- British & World English dictionary
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