Medicated Shampoo for Horses - Chlorhexidine, Contact Time and Rinsing Guide

You lather up your horse. You set a timer. Then the doubt creeps in.

Is five minutes enough? Is fifteen too long? Why does one label say 5 to 10 minutes and another say 10 to 15?

Using medicated shampoo for horses should not feel like guesswork. Wrong timing and a hurried rinse waste product. Leftover residue can also bother your horse’s skin.

This guide gives you clear steps, plain answers, and label facts you can check yourself. Stratford Animal Care makes veterinary-grade formulas, so we wrote the guide we wish every rider had.

Questions before you start? Call us at 877-498-2002.

In this guide:

What medicated shampoo for horses is
How long to leave chlorhexidine shampoo on
Step-by-step application
How to rinse completely
Choosing a strength or formula
Mistakes to avoid
Safety notes
Frequently asked questions

What Is Medicated Shampoo for Horses, and Where Does Chlorhexidine Fit?

Medicated horse shampoo contains an active ingredient for a defined skin care routine. Everyday shampoo only cleans. Chlorhexidine gluconate is a common active in these formulas, and the label lists its strength and directions.

Think of it as a different tool for a different job. The label tells you how to use it.

What Chlorhexidine Gluconate Looks Like on a Label

Chlorhexidine gluconate is an antiseptic ingredient used in veterinary products. On Stratford’s Chlorhexidine 4% Shampoo, the label lists it as the active ingredient for antimicrobial activity.

The number matters. A 4% formula and a 2% formula are not interchangeable. Read the strength before you pour.

Medicated Shampoo vs Everyday Horse Shampoo

Everyday shampoo fits routine baths. Medicated shampoo fits a plan your veterinarian has shaped or a label has defined.

Key differences:

Purpose: daily cleaning vs a targeted routine
Directions: short rinse vs timed contact
Frequency: often routine vs defined by label or veterinarian
Rinsing: quick vs thorough

If you are unsure which one your horse needs, ask your veterinarian first.

How Long Should You Leave Chlorhexidine Shampoo on a Horse?

Follow your product’s label. Stratford’s Chlorhexidine 4% Shampoo and Keto-C Medicated Shampoo both list 5 to 10 minutes of contact time. Some other equine labels call for 10 to 15 minutes. Set a timer, then rinse completely. Ask your veterinarian if your horse needs a different plan.

What Most Labels Say

Label wording varies across the market. Here is what we found on real product labels:

Product type	Stated contact time
Stratford Chlorhexidine 4% Shampoo	5 to 10 minutes
Stratford Keto-C Medicated Shampoo	5 to 10 minutes
Other 4% chlorhexidine shampoos	5 to 10 minutes
Some equine-labeled shampoos	10 to 15 minutes

The Merck Veterinary Manual suggests keeping medicated shampoo on the skin for about 10 minutes, or as directed. Read the Merck guidance for horse owners.

Why Contact Times Differ Between Products

Each product has its own formula and strength. Manufacturers set directions around their own ingredients.

That is why one number cannot fit every bottle. Your label is the rule for your product.

What Stratford’s Labels State

Stratford’s Chlorhexidine 4% Shampoo says to wet the coat and lather the entire body. It then calls for 5 to 10 minutes of contact time and a complete rinse.

Keto-C Medicated Shampoo also lists 5 to 10 minutes. It adds a thorough rinse with clean water. Both products are labeled for dogs, cats and horses.

How Do You Apply Medicated Horse Shampoo Step by Step?

Brush, wet, cleanse, apply, wait, rinse, dry. That order keeps the routine simple.

Brush out loose hair and debris.
Wet the coat with lukewarm water.
Wash with a cleansing shampoo and rinse well.
Apply the medicated shampoo and work up a lather.
Start your timer and stay within the label window.
Rinse completely, then dry.

Before You Start: Brush, Wet and Cleanse

Medicated shampoos often lather poorly on a dirty coat. The Merck Veterinary Manual advises washing with a cleansing shampoo first, then rinsing well.

Use lukewarm water. Hot water can bother skin.

Some veterinary references also suggest diluting medicated shampoo in water. Check your label first. If it says nothing about dilution, ask your veterinarian.

Lather the Coat and Watch the Clock

Work the lather in with your fingertips. Cover the area your label or veterinarian describes.

Then start the timer. Do not guess. A phone timer takes five seconds and removes doubt.

Use this time to walk your horse in a calm spot. A relaxed horse makes rinsing easier.

Protect Eyes, Ears and Mucous Membranes

Stratford’s label says to avoid eyes and mucous membranes. Keep shampoo away from the eyes, nostrils and mouth.

If shampoo gets in the eyes, flush with water. Call your veterinarian if irritation continues.

How Do You Rinse Chlorhexidine Shampoo Off a Horse Completely?

Rinse until the water runs clear and the coat no longer feels slick. Check the spots where water hides: under the mane, between the legs, and under the girth area. Rinse longer than feels necessary. Then scrape off the excess water and dry the coat.

Why Residue Matters

Leftover shampoo is the quiet problem. The Merck Veterinary Manual notes that shampoo residue is a common cause of skin irritation in horses.

That is why the label says “rinse completely.” It is not a suggestion. It protects the skin you just cleaned.

A fast spray is not a full rinse. Thick coats, feathers and manes hold product.

A Rinse Checklist

Use this list before you call the bath done:

Water runs clear, with no foam
The coat does not feel slick or tacky
You rinsed under the mane and tail
You rinsed between the legs and along the belly
You checked the girth and saddle areas
You used plenty of water on thick hair

Drying and Aftercare

Remove excess water with a sweat scraper. Towel dry any damp spots.

Keep your horse out of mud and wet bedding until the coat dries. Wash your hands and tools after use.

Want to build a wider routine? Browse Stratford’s skin and coat care collection.

How Do You Choose Between Chlorhexidine Strengths and Combination Formulas?

Choose by reading the label, then asking your veterinarian. Strength and ingredients differ by product. Match the product to your veterinarian’s plan, not to a guess.

Chlorhexidine 2% vs 4%

The number is the concentration of chlorhexidine gluconate. A 4% shampoo is full strength. A 2% shampoo is lighter.

Do not switch between strengths without checking directions. Each label sets its own steps.

Single Active vs Chlorhexidine Plus Ketoconazole

Some formulas pair two actives. Keto-C lists chlorhexidine gluconate 2% and ketoconazole 1%.

Feature	Chlorhexidine 4%	Keto-C
Active ingredients	Chlorhexidine gluconate 4%	Chlorhexidine gluconate 2%, ketoconazole 1%
Labeled for	Dogs, cats, horses	Dogs, cats, horses
Contact time	5 to 10 minutes	5 to 10 minutes
Rinse	Complete rinse	Thorough rinse with clean water

Both labels say for topical use only and to avoid eyes and mucous membranes.

Shop Stratford Chlorhexidine Shampoos for Horses

Ready to put the steps into practice? Start with a formula that lists clear directions.

Chlorhexidine 4% Shampoo

Feature: a full-strength formula with chlorhexidine gluconate 4%
Advantage: one clear label with a stated 5 to 10 minute window
Benefit: you wash with confidence, not guesswork

Keto-C Medicated Shampoo

Feature: chlorhexidine gluconate 2% plus ketoconazole 1%
Advantage: a two-active formula with the same 5 to 10 minute window
Benefit: one bottle, clear directions

Browse the full range of medicated horse shampoo options. Every product page lists active ingredients, species and directions.

What Medicated Shampoo Mistakes Should You Avoid?

Most problems come from rushing. Here are the common ones:

Skipping the pre-wash. A dirty coat blocks lather.
Ignoring the timer. Guessing leads to too short or too long.
Rinsing in a hurry. Residue stays in thick hair.
Mixing strengths. Each label has its own directions.
Using hot water. Lukewarm is gentler on skin.
Skipping the label. Directions change from bottle to bottle.

Fix one habit at a time. Start with the timer.

Safety Notes and When to Call Your Veterinarian

Medicated shampoo is for external use only. Keep it away from eyes, nostrils and mouth.

Stop using it if irritation develops or increases. Then call your veterinarian.

Call your veterinarian when:

Skin looks worse after a bath
Your horse resists touch in one area
Concerns last longer than expected
You are unsure what is going on

An examination from a veterinarian is recommended prior to using this product.

If you compete, check your governing body’s rules for topical products before show day.

Why Do Horse Owners Choose Stratford Animal Care?

We make what we sell. Stratford Animal Care is a manufacturer-direct brand, based in Oldsmar, Florida, and a member of the Swedencare family.

That means:

Veterinary-grade formulas with clear, printed directions
Manufacturer-direct access to the people who make the product
Real label information you can verify on each product page
Support from our team when you have questions

Equine clinics and barns can also open a veterinary account for professional access.

Frequently Asked Questions About Medicated Shampoo for Horses

How long should chlorhexidine shampoo stay on a horse?

Follow the label on your product. Stratford’s Chlorhexidine 4% Shampoo and Keto-C list 5 to 10 minutes of contact time. Some other equine labels list 10 to 15 minutes. Set a timer, rinse completely, and ask your veterinarian if you need a different plan.

Can chlorhexidine shampoo stay on too long?

The label sets the contact window, so stay inside it. Longer is not automatically better. Leftover product can also bother skin. When the timer ends, rinse thoroughly. Call your veterinarian if skin looks irritated after a bath.

Should I wash my horse with regular shampoo first?

Yes, in most cases. The Merck Veterinary Manual advises washing with a cleansing shampoo and rinsing well before a medicated shampoo. Medicated products often lather poorly and need a clean coat. Check your label for any extra steps.

How do I know the shampoo is fully rinsed?

Water runs clear, the coat feels smooth, and no foam appears when you rub it. Rinse under the mane, between the legs, and around the girth. Keep rinsing longer than feels necessary, especially on thick hair.

How often should I use medicated shampoo on a horse?

Follow the frequency printed on your label or given by your veterinarian. It varies by product and formula. Medicated shampoo is not a daily wash unless the label says so. Ask your veterinarian for a plan that fits your horse.

Can I use chlorhexidine shampoo near the eyes or face?

Keep it away from the eyes and mucous membranes. Stratford’s label says to flush eyes with water if contact happens. Call your veterinarian if irritation continues. Ask your veterinarian before washing the face with any medicated product.