How to Clean Your Makeup Brush Set Without Ruining the Glue

Quick Answer

To clean your makeup brush set without ruining the glue, use lukewarm water, a gentle cleanser, and keep the ferrule (the metal part) dry. Always dry your brushes with the bristles pointing downward so water doesn't seep into the glue and loosen it.

Cleaning your makeup brushes is essential for good skin and smooth application, but doing it wrong can ruin them. The most common mistake is getting the ferrule—the metal part that holds the bristles—soaked. When water and cleanser sit inside the ferrule, they break down the glue, causing bristles to shed and the brush to fall apart. That's why learning to clean your makeup brush set without ruining the glue is a skill every makeup lover needs.

The good news is that with a few simple steps and the right technique, you can keep your brushes hygienic and extend their life. Whether you own a premium set like the Rephr Kumano Brush Set or a more budget-friendly option, the care method is similar. The key is to be gentle with both the bristles and the ferrule, and to dry your brushes correctly.

Why Glue Damage Happens and How to Avoid It

Makeup brushes are held together by glue that bonds the bristles to the handle inside the ferrule. Water, especially hot water, can weaken this adhesive. If you submerge the entire brush or let water run into the ferrule, the glue softens and bristles may loosen or fall out. This is especially common when people wash brushes in a sink full of water or leave them to dry upright so moisture drips back into the handle.

To prevent glue damage, always avoid getting the ferrule wet. Keep the water level low, use a gentle stream, and tilt the brush downward so water runs away from the handle. Use lukewarm water instead of hot, and choose a mild cleanser that won't strip the glue or the bristles. Following these habits will keep your brush set intact and performing well for years.

• Never soak brushes in water—even deep cleaning can be done without submerging the ferrule.
• Disinfect your brushes regularly, but washing them too often can also weaken the glue. Aim for every 1-2 weeks for daily use, or when you switch between products.

Natural vs Synthetic Bristles: Cleaning Differences

Natural hair brushes, like those made from goat hair, are prized for their softness and ability to pick up powder products. They need a gentle touch when cleaning. Harsh soaps can strip the natural oils that keep the bristles soft, making them rough and brittle. Use a mild shampoo or a brush cleanser formulated for natural hair, and condition occasionally to maintain softness.

Synthetic brushes are designed for liquid and cream formulas and are generally more resilient. They can withstand a bit more vigorous washing, but still require the same care to protect the glue. A gentle dish soap or a dedicated synthetic brush cleanser works well. Always rinse thoroughly to remove any soap residue, which can affect application and irritate skin.

Drying Your Brushes Correctly to Protect the Glue

Drying is just as important as washing. Never dry your brushes standing upright in a cup or jar, because water can drip into the ferrule and dissolve the glue over time. Instead, lay them flat on a clean towel with the bristles slightly hanging over the edge so they dry in their natural shape and water drains away from the handle.

Keep brushes away from heat sources and direct sunlight, as high temperatures can also damage the glue and the bristles. Allow them to dry completely before using them again, which can take up to 24 hours. Proper drying not only preserves the glue but also prevents the bristles from becoming misshapen.

Step-by-Step: How to Clean Your Makeup Brush Set Without Ruining the Glue

1. Wet the bristles only: Hold the brush under lukewarm running water with the bristles pointing down. Wet only the bristles, not the ferrule or handle. Avoid soaking the brush in a bowl of water. A common mistake is getting the ferrule wet—keep it dry to protect the glue.
2. Use a gentle cleanser: Apply a small amount of mild shampoo or brush cleanser to your palm or a silicone mat. Swirl the bristles gently, working up a lather. For natural hair brushes, avoid harsh soaps that strip oils. Don't use hot water or strong detergents; they can weaken the glue and damage bristles.
3. Rinse thoroughly: Rinse under lukewarm water, still pointing down, until no soap residue remains. Gently squeeze out excess water with your fingers, being careful not to pull on the bristles. Residue can leave brushes sticky and ruin makeup application—rinse thoroughly.
4. Reshape the bristles: Gently reshape the brush head to its original form using your fingers. Don't pull or twist, as that can loosen bristles and damage the brush. Reshaping prevents misshapen brushes and helps them dry evenly.
5. Dry flat, bristles hanging off the edge: Lay the brush on a clean towel with the bristles slightly over the edge of the counter. Let it air dry 12-24 hours. Never dry upright, as water can seep into the ferrule and dissolve the glue. Proper drying is the biggest step in protecting the glue—resist the urge to speed it up with a hair dryer.

Brush Care for Rephr Brush Sets

• Kumano Brush Set: A luxurious brush set handcrafted in Kumano, Japan by master artisans. Available in 3 configurations to suit a variety of makeup styles. This set (classic) features tried-and-true shapes that works across all styles of makeup. Frequently found in pro artist brush kits. Includes 5 Brushes: 01, 02, 03, 15 & 05 These high-quality natural hair brushes are an investment—proper glue-safe cleaning will help them last for years, maintaining their performance.
• core eye set: 4 of our best-selling eye brushes, now available as a bundle at an intriguing price. handcrafted by master artisans in Japan using natural uncut goat hair, each brush in this set are designed to be versatile and will allow you to achieve any eye look with ease. Natural goat hair brushes need extra gentle cleaning to avoid drying out the bristles, so following glue-safe steps is crucial for preserving their softness.

Cleaning your makeup brushes doesn't have to be risky. By keeping the ferrule dry, using gentle cleansers, and always drying brushes flat, you can keep your brush set—whether it's a Rephr Kumano set or your everyday essential—looking and performing like new. A little care goes a long way toward preserving the glue and your investment.