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Related Experiment Video

Updated: Jul 12, 2026

Proofreading and DNA Repair Assay Using Single Nucleotide Extension and MALDI-TOF Mass Spectrometry Analysis

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Published on: June 19, 2018

Semi-permanent split end mending with a polyelectrolyte complex.

R Rigoletto¹, Y Zhou, L Foltis

¹International Specialty Products, 1361 Alps Road, Wayne, NJ 07470, USA.

Journal of Cosmetic Science

|August 31, 2007

Summary

A novel polyelectrolyte complex of Polyquaternium-28 and PVM/MA Copolymer effectively mends split ends semi-permanently. This hair repair solution demonstrates durability against combing and washing, offering a superior alternative to commercial products.

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Last Updated: Jul 12, 2026

Proofreading and DNA Repair Assay Using Single Nucleotide Extension and MALDI-TOF Mass Spectrometry Analysis

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Published on: August 19, 2015

Area of Science:

Cosmetic Science
Materials Science
Polymer Chemistry

Background:

Split ends are a common hair damage issue caused by mechanical stress, particularly from excessive combing.
Existing treatments lack permanent solutions for mending split ends, necessitating innovative approaches.

Purpose of the Study:

To develop and evaluate a novel semi-permanent split end mending composition using a polyelectrolyte complex.
To assess the durability and efficacy of the complex in repairing and mending split ends.

Main Methods:

Formation of a polyelectrolyte complex via ionic association between Polyquaternium-28 (cationic) and PVM/MA Copolymer (anionic).
Utilizing tagged split ends on hair tresses to monitor mending efficacy and durability after various treatments.
Employing stereomicroscopy, Scanning Electron Microscopy (SEM), viscometry, and ionic dye absorption for analysis.

Main Results:

The polyelectrolyte complex demonstrated significant split end mending capabilities, both alone and in a lotion formulation.
Mending efficacy proved durable after repeated combing and washing, indicating no significant buildup on hair.
The formulated lotion outperformed a leading commercial product in split end mending durability.

Conclusions:

A polyelectrolyte complex of Polyquaternium-28 and PVM/MA Copolymer offers an effective semi-permanent solution for split ends.
The proposed mechanism involves a crosslinking microgel structure that binds damaged hair sites.
This innovative treatment is suitable for post-shampoo application due to its rinse-off properties and durability.