The Effect of Diluted Sodium Hypochlorite Solution and Moisturizers on Skin Barrier Function in Atopic Dermatitis

Not Applicable

Completed

Brief Summary: The goal is this study is to investigate the effects of dilute bleach on the skin of subjects with atopic dermatitis and those with healthy skin. The second goal is to evaluate the effects of different moisturizers on the skin barrier of subjects with and without atopic dermatitis. The investigators hypothesize that the bleach bath will increase the skin pH, decrease the skin hydration, and increase skin water loss in all study subjects. Secondly, the investigators hypothesize that moisturizers with the lowest pH and the highest water to oil ratio will result in improved skin barrier function. Furthermore, the investigators believe there will be a greater improvement in patients with atopic dermatitis.

Detailed Description: The study has two main parts. Subjects in both groups will have one forearm in a dilute bleach bath and the other arm in a water bath for 10 minutes. The change in skin will be measured using different painless devices. The second part of the study involves application of 4 various moisturizers. The change in skin will be measured over a period of time using the non-invasive devices.

Recruitment & Eligibility

Inclusion Criteria

Age 8 years to 65 years
Has been diagnosed with atopic dermatitis by a board-certified dermatologist at UC Davis
Subject/parents/legal guardians able to read and comprehend the study procedure and consent forms.

Exclusion Criteria

Arm && Interventions

Group	Intervention	Description
Healthy Group	Bleach Bath and Moisturizers	These subjects do not have atopic dermatitis and are considered healthy. They will participate in the bleach bath and the moisturizer application.
Atopic Dermatitis Group	Bleach Bath and Moisturizers	These subjects have atopic dermatitis and are considered healthy. They will participate in the bleach bath and the moisturizer application.

Primary Outcome Measures

Name	Time	Method
Change in transepidermal water loss post-bath immersion	10 minutes post-bath immersion	Subjects will immerse one randomized arm in a bleach bath and the other arm in a water bath for 10 minutes. The skin barrier function will be evaluated for change in transepidermal water loss after 10 minutes of bath immersion.

Secondary Outcome Measures

Name	Time	Method
Change in skin hydration after moisturizer application	up to 60 minutes post-moisturizer application	Each subject will have 4 various moisturizers placed on each arm. The skin barrier function will be measured for change in skin hydration up to 60 minutes post-application..
Change in skin pH after moisturizer application	up to 60 minutes post-moisturizer application	Each subject will have 4 various moisturizers placed on each arm. The skin barrier function will be measured for change in skin pH up to 60 minutes post-application..
Change in skin pH post-bath immersion	10 minutes post-bath immersion	Subjects will immerse one randomized arm in a bleach bath and the other arm in a water bath for 10 minutes. The skin barrier function will be evaluated for change in skin pH after 10 minutes of bath immersion.
Change in skin hydration post-bath immersion	10 minutes post-bath immersion	Subjects will immerse one randomized arm in a bleach bath and the other arm in a water bath for 10 minutes. The skin barrier function will be evaluated for change in skin hydration after 10 minutes of bath immersion.
Change in transepidermal water loss after moisturizer application	up to 60 minutes post-moisturizer application	Each subject will have 4 various moisturizers placed on each arm. The skin barrier function will be measured for change in transepidermal water loss to 60 minutes post-application..

Locations (1): UC Davis Department of Dermatology
🇺🇸
Sacramento, California, United States