Shampoo Testing & Hair Product Clinical Trials
Clinical testing of shampoos and hair care formulations to evaluate efficacy, hair condition, scalp compatibility, and support cosmetic claim substantiation.
Shampoo Clinical Testing
What You Can Expect
Shampoo clinical testing evaluates the effect of hair care products on hair strength, growth patterns, breakage, and overall scalp and hair condition.
These studies are commonly used to support claims relating to hair fullness, reduced shedding, improved hair condition, and cosmetic hair appearance improvements.
Testing is conducted using a combination of trichological measurement techniques, microscopic analysis, and controlled in-use evaluations, depending on study objectives.
Trichological & Hair Measurement Techniques
Hair Pluck Technique
A specialised forceps-based method used to extract individual hair shafts from the scalp in order to determine the ratio of:
- Anagen (growth phase)
- Catagen (transition phase)
- Telogen (resting/shedding phase)
This provides insight into hair growth cycle distribution before and after product use.
Hair Diameter Measurements
Hair shaft thickness is measured using optical micrometric techniques, allowing for precise assessment of changes in hair diameter and fibre condition over time.
Regimented Combing Analysis
A standardised combing procedure is used to collect shed or broken hairs under controlled conditions.
Collected samples are analysed to determine:
- Number of shed hairs
- Ratio of broken vs intact hairs
- Presence of bulbous (naturally shed) hairs
This method is widely used in hair fall and breakage studies.
Trichological Hair Count Analysis
A defined scalp area is monitored using video microscopic imaging techniques to track hair density and growth patterns over time.
This allows comparison of hair counts before and after treatment to assess product performance in hair density and coverage.
Gravimetric Hair Pull Analysis
A controlled manual extraction technique used to quantify hair fallout under standardised conditions.
This method measures aggregate hair loss patterns, supporting evaluation of hair shedding reduction over time.
Additional Study Capabilities
Shampoo and hair care clinical testing may also include:
- Shampoo and conditioner efficacy testing
- Half-head comparative studies
- Thinning hair and density appearance studies
- Hair shaft strength and resilience analysis
- Anagen / telogen ratio studies
- Dandruff appearance assessments (cosmetic claims only)
- Colour retention and fade resistance studies
- Hair count and density imaging analysis
Key Improvements Made
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