Hair products

Evaluation of proliferation and protein synthesis on dermal papilla mesenchymal cells

Regulatory reference: Proprietary method
Claim: Hair loss protection and Strenghtener
Application field: Active ingredients and finished products.
Description of the test: Quantitative evaluation of the effects of a finished product or active ingredient on cell proliferation and protein synthesis through MTT test and total protein quantification after different periods of exposure.
Posted in Strenghtener, Hair loss protection, Hair products, Claim for cosmetics

Evaluation of hair restructuring efficacy

Regulatory reference: Guidelines to Commission Regulation (EU) No 655/2013
Claim: Hair loss protection
Application field: Hair products and cosmetics products for scalp treatment.
Description of the test: In vivo test: performed on selected volunteers with specific trichological features (dry and damaged hair). Volunteers will apply the product according to pre-agreed frequency and methods. 10 hairs from each subject will be gathered at T=0 and T= X days (duration to be defined with the customer). Dynamometric measurements will be performed in order to evaluate the increase in tensile strength of the hairs and their resistance to breakage. Subjective evaluations will be provided by volunteers using an open and multiple choices questionnaire to verify the perceived efficacy and other parameters such as effects on hair volume and agreeability.
In vitro test: standardized locks of human hair (several types are available according to preferences) will be treated with a damaging mixture in controlled conditions. Part of the locks will then undergo treatment with the product. Comparative imaging will be performed under tangent light to highlight improvement of hair brightness. 2 samples will be taken from each lock to evaluate improvement by phase contrast microscopy or SEM.
Posted in Hair loss protection, Hair products, Claim for cosmetics

Antimicrobial efficacy test vs Malassezia furfur

Regulatory reference: Proprietary method
Claim: Anti-dandruff
Application field: Anti-dandruff hair products, ingredients or finished products.
Description of the test: Evaluation of the anti-dandruff efficacy by testing the inhibition of the proliferation of Malassezia furfur by an ingredient or finished product.
Posted in Anti-dandruff, Hair products, Claim for cosmetics

Hair loss prevention efficacy test

Regulatory reference: Guidelines to Commission Regulation (EU) No 655/2013
Claim: Hair loss protection
Application field: Cosmetic products for hair and scalp treatment.
Description of the test: Clinical objective evaluation with high resolution imaging.
Pull test: count of the number of hairs collected under standardized traction. Trichographic analysis through cell biology techniques, and evaluation of the biological activity of collected hairs from each volunteer through MTT evaluation of cell vitality.
 
    Trichoscan phototrichogram:
  • Hair density in the target region (number of hairs/cm2);
  • Growth rate (mm/day);
  • Percentage of hairs in anagen phase;
  • Number of hairs in anagen phase.
Posted in Hair loss protection, Hair products, Claim for cosmetics

Detangling combing test

Regulatory reference: Proprietary method
Claim: Improves combing
Application field: Hair products.
Description of the test: Dynamometric analysis of the resistance to combing on standardized hair locks. Comparison between treated and untreated wet locks. Results in terms of combing friction (in Newtons) and percentage of friction reduction compared to the untreated control.
Posted in Improves combing, Hair products, Claim for cosmetics

Hair resistance to breakage assay

Regulatory reference: Proprietary method
Claim: Strenghtener
Application field: Strengthening hair products.
Description of the test: Dynamometric analysis of the tensile strength and resistance to breakage on treated and untreated hairs collected ex vivo from 20 volunteer. Results in terms of tensile strength (in Newtons) and percentage of strengthening compared to the untreated control.
Posted in Strenghtener, Hair products, Claim for cosmetics

5α-reductase inhibition efficacy test by mRNA analysis

Regulatory reference: Proprietary method
Claim: Seboregulating and Hair loss protection
Application field: Active ingredients or finished products.
Description of the test: Quantification of the changes in the gene expression of 5α-reductase in murine Balb/3T3 fibroblasts. Demonstration of the efficacy of the ingredient or finished product in reducing the expression of mRNA codifying for 5α-reductase type I or II.
Posted in Acne, Seboregulating, Hair loss protection, Hair products, Claim for cosmetics

5α-reductase inhibition efficacy test

Regulatory reference: Proprietary method
Claim: Seboregulating and Hair loss protection
Application field: Active ingredients or finished products.
Description of the test: Analysis of the in vitro expression of the 5α-reductase enzyme by real time PCR in comparison with untreated substrates for the evaluation of inhibition effects. Demonstration of the efficacy of the ingredient or finished product in reducing the expression of mRNA codifying for 5α-reductase type I or II.
Posted in Acne, Seboregulating, Hair loss protection, Hair products, Claim for cosmetics
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