Castile Soap
The question

Is Castile Soap safe in shampoo?

ClearedShampoo

Plant-oil based soap made without synthetic detergents. Biodegradable, free of synthetic preservatives and fragrances, and effective for cleaning. One of the cleanest surfactant options.

What the research flags

  • Alkaline pH can leave residue on certain surfaces (hard water scaling)
  • May dry skin with very frequent use — follow with moisturizer
  • Highly concentrated — dilution required for most uses

Other shampoo ingredients on file

Sources & references

  1. [1]
    DatabaseIngredient database — 1042-DrBronnersPureCastileSoap
  2. [2]
    Peer-reviewedPubMed / NCBI — pubmed.ncbi.nlm.nih.gov · ref 21253511
  3. [3]
    RegulatoryUS federal agency — saferchoice

Research disclaimer: Ratings reflect peer-reviewed research and regulatory assessments available at the time of publication, not the dose or formulation of any specific shampoo product. This is not medical advice.