CIR Review Summary May 6, 2026 3 min read

Skin and Connective Tissue-Derived Proteins and Peptides: CIR Safety Assessment Summary

CIR safety assessment summary for Skin and Connective Tissue-Derived Proteins and Peptides: ingredients reviewed, panel verdict, use concentration context.

Skin and Connective Tissue-Derived Proteins and Peptides appears in a CIR safety assessment covering Skin and Connective Tissue-Derived Proteins and Peptides. The panel verdict for the report is safe. The Expert Panel for Cosmetic Ingredient Safety concluded that the 19 skin and connective tissue-derived proteins and peptides listed below are safe in cosmetics in the present practices of use and concentration described in this safety assessment.

FieldCIR value
Primary ingredientSkin and Connective Tissue-Derived Proteins and Peptides
CIR verdictsafe
Report typeSafety Assessment
DateToxicology 2022
CAS numbers68951-88-2, 73049-73-7, 92113-31-0, 9007-34-5, 55963-88-7, 9000-70-8, 68410-45-7, 99924-37-5, 9007-58-3, 049-73-7, 91080-18-1, 98725-78-1
Use concentration contextpresent practices of use and concentration described in the safety assessment
Conditions or carve-outsNot reported to be in current use

Ingredients Reviewed

The review scope matters because CIR conclusions often apply to an ingredient family rather than a single INCI name. In this report, the ingredient list includes Skin and Connective Tissue-Derived Proteins and Peptides.

Safety Conclusion

The conclusion for Skin and Connective Tissue-Derived Proteins and Peptides should be read as a CIR panel conclusion, not a regulatory limit. CIR assessments summarize expert-panel safety determinations for cosmetic use, while legal status still depends on the jurisdiction and product category.

For use levels, the report gives this concentration context: present practices of use and concentration described in the safety assessment. That language is the safe-use context shown for this page.

Conditions

Not reported to be in current use

Formulation Reading

For formula review, begin with the exact INCI identity and the ingredient group covered by the CIR assessment. If the material is Skin and Connective Tissue-Derived Proteins and Peptides, the relevant comparison is whether the intended use aligns with the practices, concentration ranges, and conditions described in the CIR source.

The ingredient hub at Skin and Connective Tissue-Derived Proteins and Peptides should carry the substance-level profile. This page is the report-level summary, keeping the conclusion, ingredient scope, and use-context language attached to the CIR source rather than treating the conclusion as a universal permission.

Why This Page Exists

CIR reviews are long documents, and the practical answer is usually buried in the conclusion and the table of current practices. This summary keeps those CIR facts in one indexable page for Skin and Connective Tissue-Derived Proteins and Peptides, with source details retained at the bottom for audit.

Review Notes

The conservative reading is to keep Skin and Connective Tissue-Derived Proteins and Peptides tied to the exact CIR report listed below. The ingredient family, panel conclusion, date, and any use-condition language belong together. A shorter ingredient-page snippet would lose that context.

This page gives the search-level answer while preserving the source-level caveat: CIR safety language is a panel assessment for cosmetic practices of use, not a universal legal permission across every jurisdiction or product category.


Source

  • CIR report: Safety Assessment of Skin and Connective Tissue-Derived Proteins and Peptides as Used in Cosmetics Christina L. Burnett*, Wilma F. Bergfeld**, Donald V. Belsito**, Ronald A. Hill***, Curtis D. Klaassen**, Daniel C. Liebler**, James G. Marks
  • CIR source file: PRS744.pdf
  • Extraction JSON: CIR Safety Assessment Database
  • Conclusion page in CIR extraction: 20