The thesis focuses on the development of a moisturizing shampoo formulation for dry and damaged hair. The main focus is on the creation and evaluation of the formulation, while also considering other necessary steps for developing a safe, high-quality, and effective cosmetic product. In addition to the necessary steps in formulation planning and production, all the required documentation for launching the product on the Slovenian market is presented, following the legislation in accordance with Regulation (EC) No 1223/2009 of the European Parliament and of the Council.
The following steps in the development of a cosmetic product were considered in the thesis:
• Market analysis: types of existing shampoos, best-selling shampoos, current trends, and popularity;
• Ingredient selection and formulation design: review of general shampoo formulas and available market ingredients suitable for mass production;
• Shampoo formulation development;
• Testing / evaluation of the formulation: physicochemical properties, physical, chemical, and microbiological stability;
• Documentation with information about the cosmetic product (PIF - Product Information File): description of the cosmetic product, production description, and statement of production in compliance with Good Manufacturing Practice (GMP), evidence of effects, certifications, testing;
• Safety assessment report of the cosmetic product;
• Packaging and labeling;
• Notification on the Cosmetic Products Notification Portal (CPNP);
• Market launch, advertising, marketing, etc.
In the initial part of the thesis, a literature review was conducted on the types of shampoos and their ingredients, with a particular focus on the composition of nourishing and moisturizing shampoos and their properties. The basic shampoo formulation was analyzed, and the functions of individual ingredients, which are generally part of all shampoo formulations, were examined in detail. Additionally, a review of ingredients to be avoided during shampoo formulation was conducted due to their negative properties or effects on hair. The formulation development process followed, including the selection of suitable ingredients, considering their nourishing, repairing, and moisturizing properties while ensuring compatibility. The shampoo was then manufactured using appropriate procedures and guidelines for cosmetic product manufacturing. After production, laboratory tests were performed to evaluate the formulation, including pH testing, physical stability, density, foaming power, cleansing properties, and others.
The results of the thesis indicate that the developed formulation of damaged hair shampoo is promising, but it has some shortcomings. It has proven to be effective in repairing damaged hair, improving its structure, and enhancing its softness, shine, and moisture. However, there was an issue with the physical stability of the formulation, as it became separated after the preliminary test. The instability was reversible, as the formulation re-stabilized after brief shaking. Possible causes for this were the manual preparation of the product and the use of expired ingredients, which led to inadequate homogenization of the shampoo, resulting in physical instability.
The thesis provides an overview of the steps in the formulation of the shampoo, specifically, and offers a foundation for further research and product improvements. Additionally, compatibility with packaging could be further tested, and the product could be tested on volunteers, providing a better insight into its effectiveness.
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