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Completed

NCT Number: NCT07670676

The Effects of an L-histidine-Based Supplement, Eczema Topical, and Unscented Soap on Children With Eczema

The purpose of this study is to examine the effects of 2 dietary supplements containing the amino acid, L-histidine, alongside a plant-biotech topical product, and an unscented bar soap on 2 age groups of children with mild to moderate atopic dermatitis (group 1: ages 1-3 years, group 2: 4-12 years).

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Key information

Conditions

Atopic Dermatitis (Eczema) Congenital, Hereditary, and Neonatal Diseases and Abnormalities Dermatitis Dermatitis, Atopic Eczema Genetic Diseases, Inborn Hypersensitivity Hypersensitivity, Immediate Immune System Diseases Skin Diseases Skin Diseases, Eczematous Skin Diseases, Genetic Skin and Connective Tissue Diseases

Age range

1 year–12 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Eurofins Dermscan Poland

Gdansk, Poland

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Sex: female and male;
  • Age : from 1 to 12 years old;
  • Phototype: I to IV;
  • Type: Caucasian;
  • Child having mild to moderate eczema and atopic dermatitis (including but not limited to flakiness, irritation, itching and dryness);
  • No change in hygiene, cosmetics - except for the product(s) under study - during the entire study duration;
  • Subjects/Subjects parent's agreeing not to change lifestyle habits of child during the study duration.
  • Healthy child;
  • Child whose at least one parent/legal guardian has given freely and expressly her/his informed consent;
  • Child whose at least one parent/legal guardian is willing to adhere to the protocol and study procedures;
  • Child with Polish citizenship.

Exclusion criteria

  • Cutaneous pathology on the study zone (other than atopic dermatitis);
  • Use of topical or systemic treatment during the previous weeks liable to interfere with the assessment of the cutaneous acceptability/efficacy of the study product (the subjects are allowed to use their topical corticosteroids during the study if needed; the information about the treatment and the number of applications must be noted in the daily log);
  • Child having undergone a surgery under general anesthesia within the previous month;
  • Excessive exposure to sunlight or UV-rays within the previous month;
  • Child enrolled in another clinical trial during the study period.

Treatment and study plan

Powder Supplement + Topical Oil + Unscented Soap

Other

The intervention includes 3 products:

  • A powder dietary supplement containing 0.8g of L-histidine to be mixed with food or liquid of choice.
  • A topical oil to be used at least twice daily and as often as needed on the face and body.
  • An unscented soap to be used twice daily (in the morning and evening) on the face and body, in replacement of the usual cleansing product.

Gummy Supplement + Topical Lotion + Unscented Soap

Other

The intervention includes 3 products: 1. Gummy supplements containing 0.8g of L-histidine. 2. A topical lotion to be used at least twice daily and as often as needed on the face and body. 3. An unscented soap to be used twice daily (in the morning and evening) on the face and body, in replacement of the usual cleansing product.

Primary outcomes

  1. Objective and Subjective Scoring of Eczema Severity

    Time frame: 8 weeks

    Change in eczema severity was assessed using SCORAD (SCOring of Atopic Dermatitis). A. First, the spread of eczema on different body areas is assessed by the investigator and calculated as a percent, where the maximum is 100%. B. Second, the intensity of skin redness, swelling, oozing, scratch marks, skin thickening and dryness is scored by the investigator from 0 to 3, where 0 is none, 1 is mild, 2 is moderate, and 3 is severe. C. Finally, for the subjective score, participants are asked to report the intensity of symptoms (itch and sleeplessness) from 0 to 10, where 0 is no itch or no sleeplessness, and 10 is the worst imaginable itch or insomnia sleeplessness. The total score of the objective SCORAD is obtained with the following formula: SCORAD = A/5 + 7 B/2 + C

  2. Objective and Subjective Scoring of Eczema Severity

    Time frame: 4 weeks

    Change in eczema severity was assessed using SCORAD (SCOring of Atopic Dermatitis). A. First, the spread of eczema on different body areas is assessed by the investigator and calculated as a percent, where the maximum is 100%. B. Second, the intensity of skin redness, swelling, oozing, scratch marks, skin thickening and dryness is scored by the investigator from 0 to 3, where 0 is none, 1 is mild, 2 is moderate, and 3 is severe. C. Finally, for the subjective score, participants are asked to report the intensity of symptoms (itch and sleeplessness) from 0 to 10, where 0 is no itch or no sleeplessness, and 10 is the worst imaginable itch or insomnia sleeplessness. The total score of the objective SCORAD is obtained with the following formula: SCORAD = A/5 + 7 B/2 + C

  3. Eczema Area Severity Index (EASI) score

    Time frame: 8 weeks

    Change in eczema severity is assessed with the Eczema Area and Severity Index (EASI). Skin redness, elevation, scratching, and thickening are assessed by the investigator at 4 body regions on a scale of 0 to 3, where 0 is none, 1 is mild, 2 is moderate, 3 is severe. The EASI is the sum of these scores.

  4. Eczema Area Severity Index (EASI) score

    Time frame: 4 weeks

    Change in eczema severity is assessed with the Eczema Area and Severity Index (EASI). Skin redness, elevation, scratching, and thickening are assessed by the investigator at 4 body regions on a scale of 0 to 3, where 0 is none, 1 is mild, 2 is moderate, 3 is severe. The EASI is the sum of these scores.

Secondary outcomes

  1. Quality of Sleep

    Time frame: 8 weeks

    Parent/guardian will fill out the Children Sleep Habit's questionnaire for their child. This questionnaire inquires about bedtime, sleep behavior, waking during the night, and morning wake-up. Possible answers include: "Always", "Usually", "Sometimes", "Rarely", and "Never".

    "Always" is selected if a certain behavior occurs every night, "Usually" is selected if it occurs 5 or 6 times a week, "Sometimes" if it occurs 2 to 4 times a week, "Rarely" if it occurs once a week, and "Never" if it occurs less than once a week.

  2. Quality of Sleep

    Time frame: 4 weeks

    Parent/guardian will fill out the Children Sleep Habit's questionnaire for their child. This questionnaire inquires about bedtime, sleep behavior, waking during the night, and morning wake-up. Possible answers include: "Always", "Usually", "Sometimes", "Rarely", and "Never".

    "Always" is selected if a certain behavior occurs every night, "Usually" is selected if it occurs 5 or 6 times a week, "Sometimes" if it occurs 2 to 4 times a week, "Rarely" if it occurs once a week, and "Never" if it occurs less than once a week.

  3. Subjective Eczema Severity

    Time frame: 8 weeks

    Parent/guardian will fill out the Patient-Oriented Eczema Measure (POEM). This includes 7 questions about the number of days over the last week that their child experienced certain symptoms of eczema. Possible answers include: "No Days", "1-2 Days", "3-4 Days", "5-6 Days", or "Everyday".

  4. Subjective Eczema Severity

    Time frame: 4 weeks

    Parent/guardian will fill out the Patient-Oriented Eczema Measure (POEM). This includes 7 questions about the number of days over the last week that their child experienced certain symptoms of eczema. Possible answers include: "No Days", "1-2 Days", "3-4 Days", "5-6 Days", or "Everyday".

  5. Emotional and Behavioral Questionnaire

    Time frame: 8 weeks

    Parent/guardian will fill out the Pediatric Symptom Checklist-17 (PSC-17) for their child. It includes 17 questions that relate to how often a certain behaviors or mood occurs. Answers include "Never", "Sometimes", "Often".

  6. Emotional and Behavioral Questionnaire

    Time frame: 4 weeks

    Parent/guardian will fill out the Pediatric Symptom Checklist-17 (PSC-17) for their child. It includes 17 questions that relate to how often a certain behaviors or mood occurs. Answers include "Never", "Sometimes", "Often".

Sponsors and collaborators

Lead sponsor

Codex Labs Corporation

Industry

Registry information

Official study title

Clinical Efficacy Evaluation of a Supplement Combined With Eczema Lotion + Soap on Two Groups of Children Population Having Atopic Dermatitis- Use Test Under Dermatological Control

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Jun 26, 2026
Registry last updated
Jun 26, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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