It starts with a colour you learn to read early in this work. Tuesday morning, pad change for Mrs. O., and there it is — a deep pink band across her sacrum, warm to the touch, faintly damp where the underpad sat for six hours. No open skin. Not yet. But anyone who has run a long-term care floor knows the sequence that follows when nothing changes: maceration first, then denuded skin, then a wound that takes weeks to close and eats into staffing hours all winter.
Incontinence-associated dermatitis (IAD) is the most common skin injury in long-term care, and the most preventable one. The routine we teach is short: clean, moisturize, protect — in that order, at every change, with products chosen on purpose.
Why wetness breaks skin down
Three forces work together, and usually all at once:
- Moisture. Prolonged wetness softens the stratum corneum and swells skin cells, so the barrier that normally keeps irritants out starts letting them through.
- pH shift. Urease from fecal bacteria splits urea into ammonia and pushes skin pH from its natural 4.5–5.5 range toward alkaline, where fecal proteases and lipases turn aggressive.
- Friction. Damp skin dragged across a pad during repositioning strips the weakened surface layer off.
That is why IAD appears exactly where the product touches: sacrum, buttocks, inner thighs. The WOCN Society's guidance on perineal skin care and Health Canada's regulatory expectations for medical devices point the same direction — skin kept clean and dry stays intact.
Step 1 — Clean: remove, do not scrub
Cleanser choice matters more than most care plans admit. Bar soap leaves an alkaline residue and dries already-thin skin. Use a pH-balanced, no-rinse cleanser; the ConvaTec Sensi-Care line and similar products from Smith+Nephew are built for exactly this. A soft disposable cloth beats a shared washcloth every time.
Technique: apply, let it sit a few seconds, wipe front to back, pat dry. Never rub — rubbing is friction, and friction is the third mechanism we are trying to interrupt.
Step 2 — Moisturize: put back what cleaning took out
Every wash pulls lipids and water from aging skin that is already drier than it was at forty. A lotion with glycerin or similar humectants replaces both. Apply to the whole perineal area, not just the red zone — prevention is the point, not treatment.
Step 3 — Protect: the barrier does the heavy lifting
This is the step most homes skip, and the one that prevents the most damage. A barrier film or cream forms a physical shield between skin and urine or stool. Polymer-based barrier films — the 3M Cavilon family is the familiar one — dry to a transparent coat that survives several changes. Zinc oxide creams sit thicker and suit skin that is already irritated.
Apply the barrier to clean, dry skin before the pad goes on. Reapply after cleaning, never over a previous coat — layering barrier on barrier traps moisture underneath and undoes the job.
What the pad itself does to skin
The routine fails if the absorbent product keeps moisture against the skin. Three properties decide it:
| Property | Why it matters | What to look for |
|---|---|---|
| Absorption speed | A slow-wicking pad leaves urine pooled on the surface for minutes | Superabsorbent polymer (SAP) that pulls fluid away fast |
| Fluid lock | Wetness pressed back against skin under body weight | Multi-layer core that holds fluid away from the surface |
| Change frequency | Even a good pad fails if it stays on too long | Check every 2–3 hours; sooner after stool |
For bed-bound residents, start with a heavy-absorbency 30×36-inch disposable underpad — large enough to cover the change zone in one sheet, fast enough to keep skin dry between rounds. Where output is high, the 60×90 cm five-layer underpad with SAP locks fluid in the core rather than holding it at the surface. And for homes tracking landfill reduction, the PLA biodegradable heavy-absorbency pad matches the same absorption standard in a compostable shell.
A product combination that prevents IAD
| Resident profile | Combination |
|---|---|
| Bed-bound, high output | No-rinse cleanser + barrier film + 60×90 cm SAP underpad |
| Mobile, daytime | Cleanser wipes + moisturizer + brief, changed on schedule |
| End of life, fragile skin | Gentle cleanser + thick zinc barrier + heavy-absorbency underpad, changed frequently |
Skin care is the part of the day that never shows up on a whiteboard, yet it decides whether a resident spends winter in bed or in the dining room. The products matter; the sequence matters more. Clean, moisturize, protect, change on time — and the pink band on Mrs. O.'s sacrum stays just that, instead of becoming next month's wound consult.
Related reading: explore our long-term care and home care resources.
start with our underpad buying guide for absorbency, sizing and cost.
Related reading
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