To Assess the Cutaneous Irritation and Sensitization Potential of a Cosmetic Facial Product Using a Human Repeat Insult Patch Test (HRIPT) in Healthy Participants

Study Overview
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Brief Summary
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The objective of this clinical study is to assess the irritation and sensitisation potential of a cosmetic test product after repeated semi-occlusive patch applications to healthy human participants by following a conventional HRIPT methodology under supervision of a dermatologist.

Detailed Description
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The first phase of the study is an Induction Phase; a known amount of each product (test and control) is applied, under a semi-occlusive patch. Patches will remain on the skin for 48 (±2) (weekdays) or 72 (±2) (including inclusive weekends) hours during this phase. Induction phase lasts for 3 weeks. After the Induction Phase participants will enter a Rest Phase of 2 weeks duration, during which no patches are applied. After the Rest Phase, participants will return to the clinical site for the Challenge Phase. In this phase a challenge patch containing the test and control products is applied to virgin skin for 48 (±2) hours then assessed 30 minutes (maximum 1 hour) following removal, 24 (± 2) and 48 (±2) hours later.

Official Title
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A Human Repeat Insult Patch Test (HRIPT) in Healthy Subjects to Assess the Cutaneous Irritation and Sensitization Potential of a Cosmetic Facial Product

Conditions
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Skin Care

Intervention / Treatment
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* Other: Facial micellar cleanser
* Other: Saline Solution: Sodium Chloride (NaCl; 0.9%)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Demonstrates understanding of the study procedures, restrictions and willingness to participate as evidenced by voluntary written informed consent and has received a signed and dated copy of the informed consent form Good general and mental health with, in the opinion of the investigator or medically qualified designee no clinically significant and relevant abnormalities in medical history or upon physical examination Healthy, intact skin at the proposed application site; dorsum (scapular region) Clinical assessment for eligibility (at Visit 1 and Visit 2 - if not combined) by a dermatologist to ensure participant is free of clinically relevant dermatological conditions Fitzpatrick phototype I to IV Agreement to comply with the procedures and requirements of the study and to attend the scheduled assessment visits Exclusion Criteria: Women who are known to be pregnant or who are intending to become pregnant over the duration of the study Women who are breast-feeding Any history of significant dermatological diseases or conditions or medical conditions known to alter skin appearance or physiologic response (e.g. diabetes,) which could, in the opinion of the Investigator, preclude topical application of the investigational products and/or interfere with the evaluation of the test site reaction Presence of open sores, pimples, or cysts at the application site Active dermatosis (local or disseminated) that might interfere with the results of the study Considered immune compromised History of diseases aggravated or triggered by ultraviolet radiation Participants with dermatographism Currently using any medication which in the opinion of the investigator, may affect the evaluation of the study product, or place the participant at undue risk Use of the following topical or systemic medications: immunosuppressants, antihistamines, non-hormonal anti-inflammatory drugs, and corticosteroids up to 2 weeks before screening visit Oral or topical treatment with vitamin A acid and/or its derivatives up to 1 month before the screening visit Intention of being vaccinated during the study period or has been vaccinated within 3 weeks of the screening visit Currently receiving allergy injections, or received an allergy injection within 7 days prior to Visit 1, or expects to begin injections during study participation Previous history of atopy, allergic reactions, irritation or intense discomfort feelings to topical-use products, cosmetics or medication Study participants with a history of allergy to the study material/product, hypoallergenic tape, or to the cotton patches History of sensitisation in a previous patch study Participation in another clinical study (including cosmetic studies) or receipt of an investigational drug within 30 days of the screening visit Previous participation in this study Recent history (within the last 5 years) of alcohol or other substance abuse Intense sunlight exposure or sun tanning sessions up to 30 days before the Screening evaluation Intention of bathing (in the sea or a pool), sauna, water sports, or activities that lead to intense sweating Any participant who, in the judgment of the Investigator, should not participate in the study Any skin marks on the test site that might interfere with the evaluation of possible skin reactions (e.g. pigmentation disorders, vascular malformations, scars, tattoos, excessive hair, numerous freckles) Prisoner or involuntary incarcerated participant Participant from an indigenous tribe An employee of the sponsor or the study site or members of their immediate family

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Test product<br>All the participants will have the test product applied to the appropriate test sites by trained study staff. The test site will be designated on above the waist between the left scapula and waistline and away from the spinal mid-line. | Other: Facial micellar cleanser<br>* Participant will have each product applied topically via semi occlusive patch, on site by the technician. Each patch will remain in place for 48 (± 2) hours on weekdays and 72 (± 2) hours on weekends.<br>|
| Other: Reference product<br>All the participants will have the reference product applied to the appropriate test sites by trained study staff. The test site will be designated on above the waist between the left scapula and waistline and away from the spinal mid-line. | Other: Saline Solution: Sodium Chloride (NaCl; 0.9%)<br>* Participant will have each product applied topically via semi occlusive patch, on site by the technician. Each patch will remain in place for 48 (± 2) hours on weekdays and 72 (± 2) hours on weekends.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 3 | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Day 3 | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 5 | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Day 5 | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 8 | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Day 8 | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 10 | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Day 10 | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 12 | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Day 12 | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 15 | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Day 15 | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 17 | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Day 17 | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Induction Phase at Day 19 | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Day 19 | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 30 Minutes (Maximum 1 Hour) Post Patch Removal | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Week 6 after 30 minutes (maximum 1 hour) post patch removal | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at Week 6 After 24 (±2) Hours Post Patch Removal | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Week 6 after 24 (±2) hours post patch removal | 
| Combined Skin Irritation (Dermal Response) and Superficial Irritation (Other Effects) Scores at Challenge Phase at 6 Week 48 (±2) Hours, Post Patch Removal | A trained assessor assessed all patch sites. The following scores were used to express the response observed at the time of examination: 0=No evidence of irritation, 1=Minimal erythema; barely perceptible, 2=Definite erythema, readily visible; or minimal edema; or minimal papular response, 3=Erythema and papules, 4=Definite edema, 5=Erythema, edema, and papules, 6=Vesicular eruption, 7=Strong reaction spreading beyond test site. Other features indicative irritation (Superficial irritation) scores were: Grade A/Score 0=Slight glazed appearance, Grade B/Score 1=Marked glazing, Grade C/Score 2=Glazing with peeling and cracking, Grade F/Score 3=Glazing with fissures, Grade G/Score 3=Film of dried serous exudate covering all or portion of the patch, Grade H/Score 3=Small petechial erosions and/or scabs. Superficial irritation scores were only provided if there was a dermal response score >0. Full range was 0-10. Lower score indicates better tolerability. | At Week 6 after 48 (±2) hours post patch removal |