Effectiveness of Structured Skin Care Using Silicone Barrier Spray Compared With Zinc Oxide Ointment for Incontinence-Associated Dermatitis in Long-Term Care Residents: A Randomized Controlled Trial

Incontinence-associated dermatitis (IAD) is a common form of moisture-associated skin damage resulting from prolonged exposure of the skin to urine and/or feces. The condition is particularly prevalent among residents of long-term care facilities because of advanced age, reduced mobility, cognitive impairment, chronic illness, and urinary or fecal incontinence. IAD is associated with erythema, discomfort, pain, impaired skin barrier function, and an increased risk of secondary complications, including pressure injuries and skin infections.

Maintenance of skin barrier integrity is a fundamental component of IAD prevention and treatment. Current international guidelines recommend structured skin care programs consisting of routine cleansing, moisturization, and barrier protection. Zinc oxide-based ointments are among the most commonly used barrier products because they provide effective protection against moisture and irritants. However, zinc oxide formulations may be difficult to apply and remove, can leave residue on the skin, and may increase friction during repeated cleansing procedures.

Silicone-based barrier films represent an alternative approach to skin protection. These products form a transparent, breathable, water-resistant layer on the skin surface and may reduce friction while preserving epidermal barrier function. Sprayable silicone barrier formulations may provide additional practical advantages, including rapid application, uniform coverage, reduced physical contact with damaged skin, and improved ease of use for caregivers. Such characteristics may be particularly valuable in long-term care settings where frequent skin care interventions are required.

Despite increasing clinical use of silicone-based barrier products, direct randomized comparisons between sprayable silicone barrier films and traditional zinc oxide ointments remain limited. Furthermore, objective evaluations of skin barrier recovery using biophysical measurements have not been extensively investigated in long-term care populations with IAD.

The purpose of this study was to compare the effectiveness of a silicone barrier spray and zinc oxide ointment when incorporated into a structured skin care program for long-term care residents with mild incontinence-associated dermatitis. In addition to evaluating clinical improvement, the study investigated changes in skin barrier function using objective biophysical assessments. The findings of this study are intended to provide evidence to support clinical decision-making regarding barrier protection strategies and to improve skin care practices for vulnerable older adults residing in long-term care facilities.