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Related Experiment Videos

SEM studies on unmanageable hair.

U Schramm1, W Kühnel

  • 1Institut für Anatomie, Medizinische Universität zu Lübeck, Federal Republic of Germany.

Archives of Histology and Cytology
|January 1, 1992
PubMed
Summary

Hair manageability depends on its surface. External damage causes cuticle defects treatable with hair care, while internal damage creates spiral furrows unresponsive to products.

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Area of Science:

  • Hair science
  • Dermatology
  • Cosmetic science

Background:

  • Hair manageability is crucial for appearance and styling.
  • Hair shaft surface composition significantly impacts manageability.
  • Damage to the hair shaft can lead to unmanageability.

Purpose of the Study:

  • To differentiate between exogenous and endogenous causes of hair unmanageability.
  • To identify characteristic alterations in the hair shaft associated with each type of damage.
  • To inform appropriate hair care strategies based on damage type.

Main Methods:

  • Microscopic examination of hair shaft surface alterations.
  • Analysis of cuticle defects and shaft morphology.
  • Correlation of observed changes with exogenous and endogenous damage factors.

Main Results:

  • Exogenous damage results in massive superficial defects, including trichorrhexis nodosa and trichoptilosis, with upturned and downturned horny scales.
  • Endogenous damage is characterized by spiral furrows along the hair shaft.
  • Exogenous damage-related defects can be improved with appropriate hair care products.
  • Endogenous damage-induced spiral furrows typically do not respond to care products.

Conclusions:

  • Exogenous and endogenous hair damage present distinct morphological alterations.
  • Understanding these differences is key to effective hair care and management.
  • Differentiating damage types allows for targeted treatment approaches for hair unmanageability.

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