Why Your Shampoo Protocol Might Not Be Working: A Client Compliance Problem

Prescribing the right shampoo is only half the treatment. In a recent Zarasyl-sponsored webinar, board-certified dermatologist Dr. Julia Miller, DVM, DACVD, walked through why so many well-chosen shampoo protocols underperform, and it usually has nothing to do with the product itself.

The tell: full bottles at recheck

Dr. Miller shared a pattern she sees constantly in her own practice. Clients bring their prescribed shampoo bottles to appointments, and the bottles are still nearly full. That, she noted, is a strong signal that bathing frequency is falling well short of what was recommended, regardless of how clear the original instructions were.

Contact time is the piece clients skip first

Even when clients are bathing on schedule, Dr. Miller pointed to contact time as the most commonly shortchanged step. Shampoo that goes on and gets rinsed off immediately isn't doing meaningful work. She recommends a 5 to 10 minute contact time, with a practical caveat: if you tell a client 10 minutes, you'll likely get closer to 5. To make the point during the webinar, she set a live 10-minute timer, noting that most people underestimate how long that actually feels.

Why she recommends three-times-weekly over daily

For standard infections, Dr. Miller's default recommendation is three times weekly, typically framed to clients as a Monday-Wednesday-Friday schedule, rather than daily. Her reasoning is compliance-driven: clients presented with a daily requirement are more likely to skip it altogether, while a three-day-a-week cadence feels achievable and gets followed more consistently. She reserves daily shampooing for severe infections or significant overgrowth, where the clinical need outweighs the compliance tradeoff.

For maintenance therapy in patients prone to recurrent infection, she generally recommends one to three times weekly, with once weekly being typical for most of her maintenance patients. She often suggests clients build this into a single dedicated day each week to simplify the routine.

The role of your technician team

Dr. Miller was emphatic that this is a technician education issue as much as a client communication issue. A well-trained technician can reinforce why a topical matters, demonstrate correct application technique, and, at recheck visits, take a thorough history to identify where a protocol broke down, whether that's frequency, contact time, or a client who quietly stopped a product because of an odor or texture they didn't like. She described this as core to building client compliance in any dermatology case, not a nice-to-have.

The practical takeaway

Before adjusting a treatment plan that isn't working, it's worth confirming the basics: is the client actually bathing as often as prescribed, and are they leaving the product on long enough to do anything? Dr. Miller's experience suggests that's where a surprising number of "treatment failures" actually originate.

Watch the full session. This is one segment of a longer Zarasyl-sponsored dermatology webinar with Dr. Miller. Watch the full recording, including her live Q&A with attendees, at zarasyl.com/pages/webinars.

About the speaker

Dr. Julia Miller, DVM, DACVD, is a board-certified veterinary dermatologist with Animal Dermatology Group in Louisville, Kentucky. Her path into veterinary medicine included work as a farrier and in mixed animal practice before she became an award-winning educator and a widely recognized voice in veterinary dermatology. She is known for making dermatology practical and approachable for general practitioners and their teams.