16. Dezember 2025

Fähzan Ahmad • 16. Dezember 2025

How inadequate cleaning validation creates cross-contamination risk.

Cleaning is one of the most underestimated GMP domains in cosmetics. Visual inspection is still widely used—and widely insufficient.

ISO 22716 requires that equipment be cleaned to prevent cross-contamination. It does not define how. This ambiguity leads to under-validation. Residues from fragrances, preservatives, or actives may remain below sensory thresholds yet still be biologically or allergenically relevant.

Typical failures include missing worst-case selection, no residue limits, and absence of recovery studies. Regulators classify this as uncontrolled contamination risk, especially in multi-product lines.

A defensible cleaning validation defines:

  • worst-case product
  • acceptable residue limits
  • analytical or swab-based verification
  • revalidation triggers

Makrolife Biotech aligns cleaning validation with toxicological relevance, not cosmetic appearance—closing a major inspection vulnerability.

If you cannot prove clean, it is not clean.
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