How to Sanitize Hair Brushes Properly at Home

How to Sanitize Hair Brushes Properly at Home

Your hair brush picks up everything. Oil, dirt, dust, dead skin cells, styling products, and buildup you cannot see. If you are not cleaning it regularly, you are brushing all of that back into your hair every single day.

Let's fix that. Here is how to sanitize hair brushes properly at home, keep them clean, and avoid the mistakes that damage natural bristles or wooden handles.

Why Hair Brushes Get Dirty Fast

Every time you brush, your hair brush collects more than just hair trapped in the bristles.

What builds up:

  • Natural oils from your scalp

  • Dead skin cells and lint

  • Product residue from serums, sprays, and creams

  • Dust and environmental dirt

  • Bacteria that thrive in warm, damp conditions

If you use styling products daily or have an oily scalp, buildup happens faster. A dirty brush can clog pores, transfer bacteria back to your scalp, and make clean hair feel dull within hours.

How Often Should You Sanitize Your Hair Brushes?

A good rule: deep clean your brush once a week if you use it daily. Remove hair trapped in the bristles after every few uses.

Frequency guide:

  • Daily users: weekly deep clean

  • Styling product users: twice weekly

  • Minimal product users: every 10 days

  • Shared brushes: clean before sharing

Brushes cleaned regularly last longer, work better, and keep your hair healthier. Skipping regular cleaning means you are undoing the benefits of clean hair every time you brush.

What You Need To Sanitize Hair Brushes

You do not need special products. Most of what you need is already in your home.

Basic supplies:

  • Warm water (not hot water, which can damage natural bristle brushes)

  • Dish soap or clarifying shampoo

  • Clean toothbrush or old toothbrush

  • Large bowl

  • Clean towel

  • Rat tail comb or fine comb (for removing hair)

Optional additions:

  • Baking soda (for stubborn product buildup)

  • White vinegar (helps kill bacteria)

Avoid soaking wooden brushes or brushes with wooden handles in water for extended periods. This can cause warping, cracking, and bristle loosening.

How To Sanitize Hair Brushes: Step By Step

This method works for most brush types. We will cover special cases for natural bristles and wood in the next section.

Step 1: Remove All The Hair

Use a rat tail comb or your fingers to pull out as much hair as possible. Start at the base of the bristles and work upward.

For stubborn hair trapped deep in paddle brushes or round brushes, use scissors to carefully cut through the hair, then pull it free. A clean toothbrush can help loosen lint caught between bristles.

Step 2: Prepare Your Soapy Water

Fill a large bowl with warm water (not hot). Add a few drops of dish soap or a pump of clarifying shampoo. Mix warm water and soap until slightly sudsy.

If your brush has heavy product buildup, add one tablespoon of baking soda to the mix. This helps break down oils and residue without harsh scrubbing.

Step 3: Clean The Bristles

For synthetic brushes and plastic handles: submerge only the bristles in the soapy water. Let the brush soak for 10 to 15 minutes, bristles facing down.

For boar bristle brushes and natural bristle brushes: dip only the bristles briefly in warm water, then quickly rinse. Do not let the brush soak. Natural bristles absorb water and can become damaged or lose shape.

For wooden brushes or brushes with wooden handles: keep the wood dry. Dip only the very tips of the bristles in water.

Step 4: Gently Scrub The Bristles

Use an old toothbrush or clean toothbrush to gently scrub between the bristles. Focus on the base where product residue collects.

Work in small circular motions. Be gentle with boar bristles and natural bristle brushes to avoid pulling bristles loose or damaging the cushion.

Step 5: Rinse Thoroughly

Hold the brush under warm running water with bristles facing down. Rinse until the water runs clear and no soap remains.

For wooden handles or natural bristle brushes, quickly rinse only the bristles. Shake off excess water immediately.

Step 6: Air Dry Completely

Place the brush on a clean towel with bristles facing down. This prevents water from seeping into the handle or base, which can loosen bristles or damage wood.

Let the brush air dry completely before using it again. This usually takes 4 to 6 hours for synthetic brushes, longer for boar bristle brushes with dense bristles.

NEVER USE A BLOW DRYER OR DIRECT HEAT. High heat can warp plastic, damage natural bristles, and crack wooden handles.

Special Care For Different Brush Types

Not all brushes can be cleaned the same way. Here is how to adjust the process based on your brush type.

Boar Bristle Brushes

Boar bristles are delicate. They distribute natural oils beautifully but can be damaged by soaking or rough handling.

How to clean a boar bristle brush:

  1. Remove all hair with a comb

  2. Mix warm water with a small amount of shampoo

  3. Dip only the bristles quickly in the mixture

  4. Gently scrub with a clean toothbrush

  5. Quickly rinse under warm water, bristles down

  6. Shake off excess water and air dry completely, bristles down

Never soak the entire brush. The cushion base can absorb water and weaken over time.

If you use The Mermaid Brush (Essential Boar Bristle), this gentle method keeps the handcrafted bristles in perfect condition.

Wooden Brushes And Wooden Handles

Wood and water do not mix well. Too much moisture causes warping, cracking, and bristle loss.

How to clean wooden brushes:

  1. Remove hair completely

  2. Dampen a clean cloth with soapy water

  3. Wipe down the bristles and cushion gently

  4. Use a barely damp toothbrush to clean between bristles

  5. Wipe the wooden handle with a dry cloth

  6. Air dry bristles down on a towel, away from moisture

If your wooden brush gets wet, dry it immediately. Never leave it in a humid bathroom.

Synthetic Brushes And Paddle Brushes

Synthetic bristles are the most forgiving. They can handle soaking, scrubbing, and regular deep cleaning without damage.

How to clean synthetic brushes:

  1. Remove all hair

  2. Submerge bristles in warm soapy water for 10 to 15 minutes

  3. Scrub thoroughly with a toothbrush

  4. Rinse under warm water until clear

  5. Air dry completely, bristles down

Paddle brushes and flat brushes with vented bases dry fastest. Round brushes may take longer due to dense bristle packing.

Detangling Brushes And Wet Brushes

Most wet detangling brushes have flexible synthetic bristles designed for shower use. These can handle water and soap easily.

Cleaning steps:

  1. Remove hair after each use to prevent buildup

  2. Rinse under warm water weekly

  3. Deep clean monthly with soapy water and a toothbrush

  4. Air dry bristles down

If you use The Mermaid Brush (Wet Detangling), this simple rinse routine keeps it working perfectly for all hair types.

Common Mistakes When Cleaning Hair Brushes

Even with good intentions, these mistakes can damage your brush or reduce how well it works.

Mistake 1: Using Hot Water

Hot water can warp plastic handles, damage natural bristles, and loosen the adhesive holding bristles in place. Always use warm water instead.

Mistake 2: Soaking Natural Bristle Brushes

Boar bristles and other natural bristle brushes absorb water. Extended soaking weakens them and can damage the cushion base. Keep soaking time minimal or skip it entirely.

Mistake 3: Skipping The Hair Removal Step

If you try to wash a brush with hair still trapped in it, you will create a tangled, soapy mess. Always remove as much hair as possible first.

Mistake 4: Not Rinsing Thoroughly

Leftover soap or shampoo dries into a film on the bristles. This attracts more dirt and buildup, making your next cleaning session harder.

Mistake 5: Drying Bristles Up

Water runs down into the base and handle when bristles face up. This loosens bristles, damages wood, and creates a breeding ground for bacteria. Always dry bristles down.

Mistake 6: Sharing A Dirty Brush

Sharing a brush can transfer scalp conditions, lice, or bacteria. If you must share, sanitize the brush completely first.

Mistake 7: Ignoring Product Buildup

If you use styling products regularly, residue builds up faster than you think. Weekly cleaning prevents the sticky, dull coating that makes hair look lifeless.

How BUR BUR Tools Make The Routine Easier

The right tools require less effort to keep clean and work better for your hair health. The Mermaid Brush collection is designed for daily use and easy maintenance. Handcrafted in Korea, each brush is built to last with proper care.

Boar bristles stay cleaner for a number of reasons. They naturally resist buildup compared to synthetic bristles. Smooth, polished bristles do not snag hair or trap product. And quality construction means bristles stay secure through repeated cleaning.

How to use them in your routine:

  1. Brush hair daily with The Mermaid Brush (Essential Boar Bristle) to distribute natural oils from root to tip

  2. Detangle in the shower with The Mermaid Brush (Wet Detangling)

  3. Remove hair after each use

  4. Deep clean weekly using the gentle method for natural bristles

For a complete hair care system that supports healthy brushing habits, pair your clean brush with Growing Season Nourishing Shampoo and Growing Season Nourishing Conditioner.

Want to build the full routine? The Mermaid Bundle includes your choice of brush with Growing Season Oil for scalp-nourishing, effortlessly healthy hair.

Frequently Asked Questions

Can I use vinegar to sanitize my hair brush?

Yes. Add one tablespoon of white vinegar to your warm soapy water to help kill bacteria and break down buildup. Rinse thoroughly afterward to avoid leaving a vinegar smell on the bristles.

What is the fastest way to clean a hair brush?

The fastest method: remove all hair, rinse the brush under warm water while scrubbing with an old toothbrush, then air dry. This takes 2 minutes but should be followed by a deeper clean weekly.

Can I put my hair brush in the dishwasher?

No. The high heat, harsh detergent, and water pressure can warp plastic, damage natural bristles, loosen adhesive, and ruin wooden handles. Always wash hair brushes by hand.

How do I clean a brush with a lot of product buildup?

Soak synthetic brushes in warm water mixed with baking soda and dish soap for 20 minutes. Use a clean toothbrush to scrub between bristles. For stubborn buildup on natural bristle brushes, use a barely damp toothbrush with baking soda paste, then quickly rinse.

Can I use rubbing alcohol to kill bacteria on my brush?

You can, but it is not necessary for regular cleaning. Warm soapy water kills most bacteria. If you want extra sanitization, wipe the handle and base with a cloth dampened with rubbing alcohol after washing. Do not soak bristles in alcohol, as it can dry out natural bristles.

What should I do if my brush smells bad?

A bad smell usually means bacteria or mildew from trapped moisture. Deep clean the brush with warm soapy water and a small amount of baking soda. Rinse thoroughly, then air dry completely in a well-ventilated area. If the smell persists, replace the brush.

How do I remove lint stuck in my brush?

Use a fine comb or rat tail comb to pull lint and fuzz from between the bristles. For stubborn lint, use tweezers or the tip of a clean toothbrush to loosen it. Regular hair removal prevents lint buildup.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.