Charels Nessler
Chapter XVI – Hair Dyes, Bleaches and Mange Cures
Chapter XVI of The Story of Hair concludes Charles Nessler’s practical exploration of hair.
In this final section, he turns to:
👉 hair dyes, bleaching methods, and treatment practices
This chapter combines:
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chemistry
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practical hair treatment
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and strong criticism of misleading methods
It serves as a bridge between early cosmetic science and modern hair technology.
The Purpose of Hair Coloring
Nessler begins by defining why hair is treated chemically:
👉 to alter appearance without changing structure
He distinguishes between:
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natural hair condition
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artificial colour modification
Hair colouring is presented as:
👉 a cosmetic process, not a biological improvement
Bleaching: Removing Natural Pigment
Nessler explains bleaching as:
👉 the removal of natural colour from hair
Process:
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chemicals break down pigment
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hair becomes lighter
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structure remains but is weakened
He notes that bleaching:
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alters the outer layer
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affects texture
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can damage the fibre
Chemical Effects on Hair Structure
A key point:
👉 chemical treatments do not improve hair
Instead, they:
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modify appearance
-
weaken structure
-
change physical properties
He emphasizes:
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repeated treatments → cumulative damage
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overuse → loss of strength and elasticity
Hair Dyes and Artificial Colour
Nessler distinguishes bleaching from dyeing:
Bleaching
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removes pigment
Dyeing
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adds artificial colour
He explains that dyes:
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coat or penetrate the hair
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change visible appearance
-
do not affect internal growth
👉 Important:
Hair colour ≠ hair health
Limitations of Hair Treatments
A central theme:
👉 cosmetic treatment does not equal biological change
Nessler argues:
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dyed hair is not “improved”
-
bleached hair is not “healthier”
-
appearance can be misleading
This aligns with his broader view:
👉 external treatment has limits
Critique of Misleading Products
Nessler continues his criticism of the industry.
He highlights:
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exaggerated claims
-
misleading advertising
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confusion between treatment and illusion
Examples include:
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products that claim to restore hair
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substances that only alter colour
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treatments marketed as “curative”
Mange Cures as an Example
Nessler revisits a theme from earlier chapters:
👉 treatments for mange (skin disease in animals)
He explains:
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hair regrowth occurs after disease removal
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not because of “growth stimulation”
-
but because normal function is restored
👉 Important distinction:
Treatment removes cause—not creates growth
Surface vs System
This chapter reinforces a key idea:
👉 difference between surface treatment and internal condition
He argues:
-
dyes and bleaches affect only the surface
-
real hair production occurs internally
-
external methods cannot replace internal balance
Hair Damage Through Treatment
Nessler warns about:
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overprocessing
-
repeated chemical exposure
-
misuse of products
He notes that:
-
hair becomes brittle
-
loses elasticity
-
breaks more easily
👉 Long-term effect:
visible deterioration despite improved appearance
Cosmetics vs Reality
A key conclusion:
👉 cosmetic improvement can hide underlying issues
Hair may appear:
-
darker
-
smoother
-
healthier
while actually being:
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weakened
-
chemically altered
-
structurally compromised
Conclusion of Chapter XVI
Chapter XVI completes Nessler’s practical discussion of hair.
Key ideas:
-
chemical treatments alter appearance, not biology
-
bleaching removes pigment but damages hair
-
dyes create colour but not strength
-
many products are misleading
-
real hair health depends on internal factors
Modern Scientific Perspective
Modern science confirms many of Nessler’s observations—while refining the details.
✔️ What is correct:
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bleaching damages hair structure ✔
-
dyes alter appearance, not growth ✔
-
repeated chemical treatment weakens hair ✔
-
cosmetic results can be misleading ✔
❌ What is outdated:
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lack of understanding of modern formulations ❌
-
no distinction between different dye technologies ❌
Modern hair chemistry
Today’s treatments include:
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oxidative dyes
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semi-permanent colours
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controlled bleaching systems
-
conditioning agents
Modern products aim to:
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reduce damage
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protect structure
-
improve appearance safely
What remains true today
Nessler’s strongest insight:
👉 cosmetics ≠ biological improvement
Even today:
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colour does not strengthen hair
-
treatments do not create new follicles
-
appearance can hide damage
Final Interpretation
Chapter XVI closes the practical part of the book.
Nessler emphasizes:
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realism
-
limits of intervention
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importance of understanding
Hair is presented as:
👉 a system that can be modified—but not fundamentally changed from the outside
OPTIONAL SECTION
→ Chapter 17
→ Chapter 15
→ The Permanent Wave – Invention, Method and Impact
Below you find the original scanned version of Chapter XVI from The Story of Hair by Charles Nessler.