Para phenylenediamine is the chemical substance mostly used in preparation of permanent hair dye products. Para phenylenediamine interact with penetrating the cuticle and bonding with the hair protein. Safety considerations while using PPD hair dye.

1. Chemistry and formulation of para phenyl
diamine-based hair dye
Presented by- Ruchi B. Suryawanshi
& Sakshi A. Karanjekar
Subject Name- Cosmetic Science
Guide Name- Chandrashekhar M. Chakole
Bajiraoji Karanjekar College of Pharmacy, Sakoli,
Dist.- BhandaraM.S. – 441802 Rashtrasant Tukadoji Maharaj Nagpur
University

2. Contents
• Introduction to para phenyl diamine-based hair dye
• Chemical composition
• Factors affecting Hair dye performance
• Safety considerations
• Formulation consideration
• Future developments
• Conclusion

3. Introduction to para phenyl diamine
based Hair dye
• Paraphenyl diamine (PPD) is a key ingredient in permanent hair dyes,
providing vibrant and long-lasting color. This formulation is known
for its effectiveness in covering gray hair and its wide range of color
options.
• Para-phenylenediamine (PPD) is a common chemical compound used
in hair dyes, particularly in permanent hair coloring products.

4. Primary ingredient
Para phenyl diamine
(PPD) is the primary
chemical compound
used in hair dyes.
Colorant properties
PPD is known for its strong and lasting color properties, making
it a popular choice for permanent hair dye formulations.
Chemical structure
The molecular structure
of PPD allows it to
penetrate the hair shaft
and bond with the natural
pigment, resulting in
long-lasting color
Chemical Composition of Paraphenyl Diamine

5. • Para phenyl diamine interacts with hair by penetrating the cuticle and
bonding with the hair protein. This chemical reaction results in the alteration
of hair colour, providing long-lasting dyeing effects. Additionally, the
interaction influences the texture and structure of the hair shaft.
How does Para phenyl Diamine Interact with Hair?

6. • Alkalizing Agents: These ingredients help to open the hair cuticle for better dye
penetration.
• Conditioning Agents: They ensure the hair remains healthy, soft, and manageable
after colouring.
• Emulsifiers: Essential for blending oil and water-based ingredients in the dye
formula.
The Role of Other Ingredients in Hair Dye Formulation

7. Factors Affecting Hair Dye Performance
Hair Porosity
The porosity of the hair affects how
easily it absorbs and retains the dye,
influencing the final color result
Existing Hair Color
The natural color of the hair, as well as
any previous dye treatments, can
impact how the new dye appears
Application Technique
The way the dye is applied, including
sectioning, timing, and saturation,
affects the overall performance and
coverage

8. Safety Considerations When Using Para phenyl
Diamine Based Hair Dye
Follow the instructions for application and
timing to minimize the risk of adverse effects
It's important to perform a patch test to check
for allergic reactions before applying the dye.
Always use gloves to avoid direct skin contact
and prevent any possible irritation
Ensure proper ventilation in the area where the
dye is being applied to avoid inhaling fumes

9. Comparison with Other Types of Hair Dye
Para phenyl Diamine
Based Hair Dye
Vegetable-Based Hair Dye Temporary Hair Dye Bleach-Based Hair Dye
Known for vibrant and
long-lasting color results.
Natural alternative made
from plant-based
ingredients.
Non-permanent color
options for experimenting.
Lightens hair color by
removing natural pigment.
Mainly used for
permanent hair coloring.
Gentler on the scalp and
hair strands.
Easily washes out after a
few shampoos.
Often used as a pre-
treatment for vivid color
Applications.
Contains paraphenyl
diamine as the primary
coloring agent.
Provides subtle, semi-
permanent color
variations.
Does not penetrate deeply
into the hair cuticle.
Requires careful
application and
maintenance.

10. Enhanced Color Longevity
Developing formulations to prolong color
vibrancy
Minimized Scalp Sensitivity
Reducing allergic reactions through
innovative ingredients
Improved Eco-Friendly Formulations
Exploring sustainable and non-toxic dye
ingredients
Future Developments in Para phenyl Diamine-Based Hair Dye Technology
Hair Dye Technology

11. pH Adjustment
Acidic pH levels assist in
opening the hair cuticle
for dye penetration
Solvent Selection
Ethylene glycol is a
commonly used solvent
to ensure the even
distribution of dyes.
Chemical Compatibility
Thorough testing is vital
to ensure all ingredients
work harmoniously in the
formulation.
Formulation considerations for hair dye manufacturers

12. Conclusion and summary of key points
Effectiveness of Para phenyl Diamine Color Range and Customization
Para phenyl diamine-based hair dye provides long-
lasting color with vibrant results, making it a popular
choice for consumers
The formulation of para phenyl diamine allows for a
wide range of color options and customizable shades
to meet individual preferences.
Interaction with Hair Texture Longevity and Fade-Resistant
It effectively penetrates the hair shaft, providing even
color distribution and full coverage, enhancing the
natural texture of the hair.
Para phenyl diamine-based hair dye offers excellent
longevity and fade-resistant properties, maintaining
color vibrancy over time.

13. Reference
• Nanda, S., Nanda, A., & Khar, R. (2022). Cosmetic Technology. Birla
Publication.
• Mittal B. M., & Saha, R. N. (2000). A Handbook Of Cosmetics.
Delhi: Delhi Vallabh Prakashan
• Pathak, K., Vaidya, A. (2019) Cosmetic Science concepts and
principles. Nirali Prakashan, 5.23-5.26

14. THANK YOU