The Hair Density Measurement Test is a laboratory imaging analysis designed to assess changes in hair density, thickness, and scalp coverage over time. It provides quantitative and visual data to demonstrate the effectiveness of hair care products formulated to promote growth, strengthen roots, or prevent thinning.

Purpose of the Test

The goal of this test is to evaluate whether a cosmetic product increases the number of visible hair strands per square centimeter or improves the appearance of hair fullness and volume. It supports claims such as “improves hair density,” “stimulates growth,” “reduces hair loss,” and “enhances scalp coverage.”

How the Test Works

The Hair Density Measurement Test is performed using an Apparatus Test that involves high-magnification scalp imaging. A digital microscope or trichoscopy camera captures standardized images at x60 magnification before and after a defined period of product use. Software analysis or manual counting determines the number of hair strands in a given area, comparing baseline and post-treatment density.

Applications in Cosmetic Testing

• Evaluation of hair growth serums, tonics, and scalp treatments
• Testing of anti-hair loss and strengthening formulations
• Assessment of hair-thickening and density-boosting products
• Support for “stimulates hair growth” and “reduces thinning” claims
• Visual documentation of product efficacy over time

Test Procedure

1. The study includes 10 volunteers selected under dermatological supervision.
2. Baseline scalp images are taken at x60 magnification to determine initial hair density.
3. Participants use the test product regularly for a defined duration (e.g., 4–8 weeks).
4. Post-treatment images are captured under the same conditions and magnification.
5. Hair count and density are analyzed to determine improvement compared to baseline results.

Results & Reporting

The final report includes:

• Detailed description of study protocol and imaging setup
• Baseline and post-treatment scalp photographs
• Quantitative measurement of hair count per cm²
• Statistical analysis of density changes over time
• Visual comparison and interpretation of results

Why This Test Matters

Hair density is a key indicator of scalp health and cosmetic product effectiveness. This test provides measurable evidence of product performance in promoting fuller, stronger, and healthier-looking hair. It is an essential tool for substantiating claims for hair growth, anti-hair loss, and volumizing products.

Sample Requirements

• Minimum quantity: 50–100 mL or g of finished product
• Number of samples: 11 finished products
• Product type: hair serums, scalp tonics, shampoos, or conditioners
• Storage: room temperature unless otherwise specified

Test Parameters

• Duration: typically 4–8 weeks of regular product use
• Measurement intervals: before and after treatment
• Participants: 10 volunteers
• Imaging magnification: x60
• In-house methodology: I06/PO-08

Turnaround Time

Typical turnaround time is 5–8 weeks depending on study duration and analysis intervals.

Deliverables

• Comprehensive laboratory report in PDF format
• Before-and-after images at x60 magnification
• Hair density measurement data with statistical analysis
• Summary suitable for claim substantiation and regulatory purposes

Compliance & Standards

The Hair Density Measurement Test is conducted according to in-house methodology I06/PO-08 and under Good Clinical Practice (GCP). All procedures are carried out under controlled laboratory conditions using calibrated equipment to ensure accuracy and reproducibility.