How to Brush a Dog's Undercoat: A Step-by-Step Guide

If your dog has a thick or double coat, you may notice loose fur building up beneath the outer layer of hair.

This softer layer is called the undercoat. Regularly grooming the undercoat can help remove loose fur before it spreads throughout your home while keeping your dog's coat easier to manage.

But brushing a dog's undercoat is not simply about brushing harder or faster.

The right technique, the right grooming tool, and a calm approach can make the experience more comfortable for both you and your dog.

In this guide, we'll walk through how to brush a dog's undercoat step by step and explain how to make regular deshedding part of your dog's grooming routine.

What Is a Dog's Undercoat?

If you're wondering why your dog may be shedding more than usual, read our guide to common causes of dog shedding.

A dog's coat can consist of two main layers: the outer coat and the undercoat.

The outer coat is the more visible layer. The undercoat is typically softer, finer, and denser, and it can provide insulation by helping regulate body temperature.

Many double-coated breeds have a substantial undercoat.

When loose undercoat is not regularly removed, fur can accumulate beneath the outer coat and eventually end up around your home.

Regular grooming can help remove this loose hair before it falls naturally.

Which Dogs Have an Undercoat?

Many dogs have double coats, although the thickness and texture can vary significantly between breeds.

Dogs that commonly have noticeable undercoats include:

• Golden Retrievers

• Labrador Retrievers

• German Shepherds

• Border Collies

• Huskies

• Australian Shepherds

• Bernese Mountain Dogs

• Many other double-coated breeds

However, not every dog has the same coat structure.

If you're unsure whether your dog has an undercoat, a veterinarian or professional groomer can help you identify your dog's coat type.

How to Brush a Dog's Undercoat

Brushing a dog's undercoat should be gentle and gradual.

The goal is to remove loose hair without pulling aggressively on the coat or repeatedly irritating the skin.

Step 1: Choose the Right Grooming Tool

Start with a grooming tool designed for your dog's coat type.

For dogs with thick or double coats, a deshedding brush can help reach loose undercoat and remove hair that may otherwise remain beneath the outer coat.

Look for a brush that is comfortable to hold and gentle enough for regular use.

A good grooming tool should allow you to work through the coat without excessive pressure.

Step 2: Choose a Calm, Comfortable Location

Choose a quiet place where your dog feels comfortable.

A calm environment can make grooming easier, especially if your dog is not accustomed to being brushed.

Let your dog sniff the brush before you begin.

Start slowly and give your dog time to become familiar with the grooming process.

Short grooming sessions can be easier for dogs that are still learning to enjoy brushing.

Step 3: Start With the Outer Coat

Before working deeper into the coat, gently brush through the outer layer.

Use slow, controlled strokes rather than repeatedly brushing the same area.

This can help identify tangles and areas where loose fur has accumulated.

If you encounter a knot, avoid pulling through it forcefully.

Work gently around the area and use an appropriate detangling technique.

Step 4: Work Through the Undercoat Gently

Once the outer coat is manageable, begin working through the undercoat.

Move the brush gently through the coat in small sections.

For dogs with thick fur, separating the coat into sections can make it easier to reach loose undercoat without applying unnecessary pressure.

You may notice loose hair collecting on the brush as you work.

This is normal, particularly during periods of heavier shedding.

The goal is to remove loose fur gradually rather than trying to remove everything in one session.

Step 5: Pay Attention to Common Problem Areas

Some areas can collect more loose fur or become tangled more easily.

Pay particular attention to areas such as:

• Behind the ears

• Around the neck

• Behind the front legs

• Around the chest

• Along the sides

• Behind the back legs

• Around the tail

These areas should be brushed carefully because the coat may be denser or more prone to tangling.

Always adjust your pressure based on your dog's reaction.

Step 6: Check the Coat and Skin

As you groom, take the opportunity to look at your dog's coat and visible skin.

Look for unusual redness, irritation, sores, bald patches, or other changes that do not appear normal for your dog.

Regular grooming gives you a chance to notice changes early.

If you see something unusual or your dog appears uncomfortable, stop grooming the affected area and consider speaking with your veterinarian.

Step 7: Finish With a Gentle Final Brush

After working through the undercoat, give the coat a gentle final pass.

This helps remove remaining loose hairs from the surface and leaves the coat looking smoother.

Reward your dog with praise, affection, or a small treat if appropriate.

The goal is to make grooming a positive and predictable part of your dog's routine.

How Often Should You Brush a Dog's Undercoat?

Regular brushing is one of the simplest ways to manage loose fur. For more practical tips, see our guide on how to reduce dog shedding at home.

The ideal grooming frequency depends on your dog's coat type, lifestyle, and shedding pattern.

Dogs with thick double coats may benefit from brushing several times a week.

During heavier seasonal shedding periods, some dogs may need more frequent grooming.

A useful approach is to pay attention to how quickly loose fur accumulates.

If you notice increasing amounts of loose hair around your home or visible buildup in your dog's coat, it may be time to increase grooming frequency.

Regular short sessions are often easier to manage than occasional long sessions.

How Do You Remove Loose Undercoat Without Hurting Your Dog?

The most important rule is to avoid excessive pressure.

A deshedding brush should help remove loose hair without requiring force.

If your dog pulls away, repeatedly scratches, shows signs of discomfort, or becomes stressed, stop and check the grooming technique.

Avoid repeatedly brushing one small area simply because you can see loose hair there.

More brushing is not always better.

Gentle, controlled grooming is generally a better approach for regular coat maintenance.

What Is the Best Brush for a Dog's Undercoat?

The best brush depends on your dog's coat type.

For dogs with thick double coats, a deshedding brush can be useful for removing loose undercoat.

For dogs that are prone to knots or tangles, a tool that combines detangling and deshedding can be more convenient for everyday grooming.

The most important factors are comfort, coat compatibility, and ease of use.

For regular at-home grooming, the PInvella™ GentleCare Deshedding Tool combines gentle detangling with loose undercoat removal in one practical grooming tool.

It is designed for dogs and cats and can be incorporated into a simple everyday grooming routine.

Common Mistakes When Brushing a Dog's Undercoat

Even with the right brush, technique matters.

Brushing Too Aggressively

Applying too much pressure can make grooming uncomfortable.

Use gentle strokes and allow the grooming tool to do the work.

Trying to Remove All Loose Hair at Once

Heavy shedding can produce a surprising amount of loose fur.

Trying to remove everything in a single session can make grooming tiring for both you and your dog.

Regular sessions are usually easier.

Ignoring Tangles

Tangles can become tighter over time.

If you find a knot, avoid pulling aggressively. Work around the area gently and use an appropriate detangling method.

Brushing Only the Top Layer

If your dog has a thick double coat, brushing only the visible outer layer may leave loose undercoat behind.

Work gradually through the coat rather than focusing only on the surface.

Grooming When Your Dog Is Stressed

A stressed or restless dog may make grooming difficult.

Choose a calm environment and keep early sessions short.

How to Make Undercoat Grooming Easier

The easiest way to stay on top of shedding is to make grooming part of your normal routine.

You do not need to wait until your dog is heavily shedding.

Instead, set aside a few minutes several times a week, depending on your dog's coat.

Keep the grooming tool somewhere easy to access and use the same calm routine each time.

Over time, your dog can become more familiar with the process, making grooming easier for both of you.

Frequently Asked Questions About Dog Undercoat Grooming

Should you brush a dog's undercoat?

Yes. For dogs with double coats, regular grooming can help remove loose undercoat and manage shedding.

How often should I brush my dog's undercoat?

It depends on the dog's coat type and shedding pattern. Dogs with thick double coats may benefit from brushing several times a week, with more frequent grooming during heavier shedding periods.

Can brushing remove all dog shedding?

No. Healthy dogs naturally shed hair. Brushing helps remove loose fur before it falls around your home, but it cannot completely stop normal shedding.

What brush should I use for a double-coated dog?

A deshedding brush designed for double coats can help remove loose undercoat. Dogs that are also prone to tangles may benefit from a tool that combines detangling and deshedding.

Can brushing hurt my dog?

Brushing should not be painful. Use gentle pressure and a grooming tool appropriate for your dog's coat. If your dog appears uncomfortable, stop and reassess your technique.

Should I brush a dog's undercoat when it is wet?

For most routine brushing, it is generally easier to work with a dry coat unless you are following a specific grooming method recommended for your dog's coat type.

Final Thoughts

Brushing your dog's undercoat does not need to be complicated.

The key is using the right grooming tool, working gently through the coat, and keeping sessions short and consistent.

For dogs with thick or double coats, regular undercoat grooming can help manage loose fur and keep the coat easier to maintain.

Start slowly, pay attention to your dog's comfort, and make grooming a normal part of everyday pet care.

With the right routine, a few minutes of regular grooming can make life with a shedding dog much easier.

If you're looking for an everyday grooming tool that combines detangling and deshedding, explore the PInvella™ GentleCare Deshedding Tool.