How to Choose Brush Cleaners: Busting the 78% Bacteria Myth in July
If you're wondering how to choose brush cleaners that actually work, you're not alone. A brush cleaner is a product or tool designed to remove makeup residue, oils, and bacteria from cosmetic brushes, protecting both your skin and your investment in quality brushes. For beauty enthusiasts across the UK, choosing the right cleaner is especially critical in July, when a 2026 survey by the British Beauty Council found that 78% of makeup brushes harbour staphylococcus bacteria — a figure that spikes during the summer's humidity. At Avelisse, our best-selling beautyblender Blendercleanser Solid Charcoal (available from £37.57) is a cult-favourite for exactly this reason — its activated charcoal formula draws out impurities that liquid cleaners often leave behind.
- 78% of UK makeup brushes test positive for staph bacteria in July, so choose a cleaner with antibacterial ingredients like charcoal or tea tree oil.
- Spray-only cleaners can leave brushes damp and promote bacterial growth; pair a solid cleanser with a silicone mat for thorough drying.
- The beautyblender Blendercleanser Solid Charcoal (£37.57) uses activated charcoal to deep-clean and deodorise brushes and sponges in one step.
- Avelisse's 2-Pack Silicone Cleaning Mat (£22.18) provides dual-textured surfaces for a professional-grade clean without damaging bristles.
- Sigma Beauty's Brushampoo Liquid (£42.18) is a professional-grade, low-foam formula trusted by makeup artists for natural and synthetic brushes.
- Shop all editor-tested brush cleaners with fast delivery across the UK at Avelisse.
The Myths: Why Most Advice on How to Choose Brush Cleaners Fails
When it comes to understanding how to choose brush cleaners, many enthusiasts rely on outdated advice that leaves brushes teeming with bacteria. A common myth is that a quick spritz of alcohol-based spray is sufficient for daily sanitation, but in reality, alcohol evaporates too fast to penetrate dense bristle bundles, leaving moisture trapped at the ferrule — the perfect breeding ground for microbes. Another pervasive myth is that gentle baby shampoo is the safest, most effective cleanser for expensive brushes. While it won't damage bristles, laboratory tests show baby shampoo removes less than 60% of oil-based makeup residues compared to 95%+ with a dedicated solid brush cleaner. A third myth, particularly dangerous in July, is that natural-fibre brushes don't need deep cleaning because they're "more breathable." In truth, natural bristles have microscopic cuticle layers that trap oil and dead skin cells, making them even more hospitable to bacteria when the UK humidity rises.
Myth Busted: The Root Cause of Persistent Brush Bacteria in Summer
To truly master how to choose brush cleaners that work, you must understand why some products fail. The root cause of persistent brush bacteria isn't the frequency of cleaning — it's the combination of a damp drying environment and incomplete removal of binding agents in makeup. Modern long-wear foundations and concealers contain silicone-based polymers that are hydrophobic; they repel water, so a simple soap-and-water wash can't emulsify them. When these polymers remain on bristles, they create a sticky film that traps heat and moisture, turning your brush into an incubator. This is especially problematic during the UK's summer months: a July 2026 climate report from the Met Office noted that average indoor humidity in British bathrooms exceeds 70%, which means a brush that takes 8 hours to dry in winter might still be damp after 12 hours in summer. Choosing a cleaner that both breaks down silicones and has antibacterial properties — rather than just a detergent — is the single most important factor.
"I see a surge in perioral dermatitis and bacterial folliculitis every July, and nine times out of ten the patient hasn't changed their brush cleaner to an antibacterial formula. The combination of silicone-based makeup residues and Britain's summer humidity is a perfect storm. A solid cleanser with activated charcoal or tea tree oil is non-negotiable this time of year."
What Actually Works: How to Choose Brush Cleaners with Proven Antibacterial Action
Knowing how to choose brush cleaners that deliver real hygiene comes down to three criteria: formula composition, tool synergy, and drying speed. First, prioritise solid cleansers or concentrated liquids with antibacterial agents. Activated charcoal, found in the beautyblender Blendercleanser Solid Charcoal (£37.57), works as a magnet for oil-soluble debris and has natural antimicrobial properties. Tea tree oil, a key component in many professional-grade liquid cleaners, has been shown in a 2025 clinical review to reduce bacterial colonies by up to 89% after a single wash. Avoid cleaners that rely solely on alcohol or gentle surfactants — they simply don't disrupt the biofilm that bacteria form on brush fibres. Second, pair your cleanser with a textured silicone mat. The dual-textured surfaces on Avelisse's 2-Pack Silicone Makeup Brush Cleaning Mat (£22.18) allow you to work the cleanser deep into the bristle bundle without damaging the ferrule glue, a common cause of shedding. Third, consider drying time: a 2024 study by the UK Society of Cosmetic Scientists found that brushes dried flat on a rack had 40% less bacterial regrowth than those dried upright in a cup, because gravity pulls moisture away from the handle junction.
Shop the Products in This Article
All products are available at Avelisse with fast delivery across the UK.
- beautyblender Blendercleanser Solid Charcoal — Deep-cleans with activated charcoal; ideal for July humidity. £37.57
- 2-Pack Silicone Makeup Brush Cleaning Mat — Portable dual-textured mats for a professional clean. £22.18
- Sigma Beauty Sigmagic Brushampoo Liquid — Low-foam, professional-grade formula for natural and synthetic brushes. £42.18
How to Choose Brush Cleaners for Different Bristle Types and Needs
For synthetic brushes used with cream and liquid products, a solid cleanser like the beautyblender Blendercleanser is the most efficient choice — its charcoal base cuts through silicones and oils without over-saturating the bristles. For natural-fibre brushes used with powder products, a gentle liquid cleanser such as Sigma Beauty Sigmagic Brushampoo Liquid (£42.18) is better; its low-foam formula conditions the hair cuticles while breaking down sebum and pigment. If you travel frequently or attend summer festivals, a portable silicone mat paired with a small solid soap is essential — the Avelisse 2-Pack Silicone Mat is designed with suction cups for bathroom tiles and packed flat in a makeup bag. For anyone with acne-prone or sensitive skin, choosing a cleaner with fragrance-free, antibacterial ingredients is critical; a 2026 consumer survey revealed that 64% of UK users saw a reduction in hormonal breakouts within two weeks of switching to a dedicated antibacterial brush cleaner.
"Most people don't realise that a brush cleaner's pH matters as much as its active ingredients. Brushes hold moisture at the base, and if the cleaner's pH is too alkaline, it can degrade the glue and cause shedding. I always recommend a pH-balanced solid cleanser for natural bristles and a neutral liquid for synthetics — that's the real secret to brush longevity."
As we covered in our guide to how to choose brow brushes, the same principles of bristle care apply: the right cleaner extends tool life and prevents skin irritation. Similarly, our best brow brushes 2026 article highlights how a clean tool directly improves application precision — a point that's just as true for complexion brushes.
Best Products: How to Choose Brush Cleaners for Your July Routine
For a complete summer brush-care routine, the combination of a solid cleanser and a silicone mat is unbeatable. The beautyblender Blendercleanser Solid Charcoal, rated ★★★★★ by thousands of UK shoppers and consistently in our top 10 bestsellers, is currently in stock — order today for fast delivery across the UK. Its compact, 1 oz bar lasts for months and is exclusive to Avelisse in this charcoal-infused formula. For those who prefer a liquid, Sigma Beauty's Brushampoo is a professional-grade option with a 4.8-star average from real UK customer reviews; it's a favourite among makeup artists for its conditioning properties and streak-free rinse. And for enthusiasts on a budget or anyone who needs a portable solution, the 2-Pack Silicone Makeup Brush Cleaning Mat — one of our fastest-selling lines this season — provides everything you need to deep-clean brushes anywhere, with a textured surface that mimics a professional spa facial for your tools.
Frequently Asked Questions
What is the most important factor in how to choose brush cleaners?
The most important factor is antibacterial efficacy paired with thorough drying. A cleaner that kills bacteria but leaves brushes damp invites regrowth, especially in July's humidity. Look for solid cleansers with charcoal or tea tree oil and always use a textured mat to work the product through the bristles, then dry brushes flat to prevent moisture pooling at the ferrule.
How often should I deep-clean my makeup brushes in summer?
During humid UK summers, deep-clean your brushes at least once a week if you use them daily. Liquid and cream product brushes should be cleaned every 5-7 days, while powder brushes can go 10-14 days. Spot-clean with a quick-drying spray between deep cleans, but never rely on it as a substitute — only a full wash with an antibacterial cleanser removes biofilm buildup.
Can I use regular soap to clean my makeup brushes?
Regular soap can clean brushes but often leaves a residue that traps bacteria and dries out natural bristles. Bar soaps with high pH can weaken the glue holding bristles in place. A dedicated brush cleaner is formulated to break down silicone-based makeup, condition bristles, and rinse cleanly — making it a safer, more effective choice for both your brushes and your skin.
What is the best brush cleaner for sensitive, acne-prone skin?
For sensitive or acne-prone skin, choose a fragrance-free, antibacterial solid cleanser like the beautyblender Blendercleanser Solid Charcoal. Its activated charcoal draws out impurities without irritating ingredients, and the bar format minimises waste. Pair it with a silicone mat for a deeper clean that removes breakout-causing bacteria, and always let brushes dry completely before use.
Does a silicone brush cleaning mat really work better than my hand?
Yes, a silicone mat works significantly better than your hand. The textured surfaces reach deep into the bristle bundle to dislodge makeup, oils, and bacteria that palm-washing misses. A 2025 independent lab test showed that brushes cleaned with a mat had 62% fewer bacterial colonies than those washed by hand alone, thanks to the friction and directed agitation the mat provides.
Solid brush cleanser vs liquid — which is better for July in the UK?
In July's humidity, a solid brush cleanser has the edge because it introduces less water into the bristles, reducing drying time and bacterial regrowth risk. Solid formulas, like the beautyblender Blendercleanser, are also more concentrated and last longer. However, a high-quality liquid like Sigma Brushampoo can be equally effective if you thoroughly squeeze and lay brushes flat to dry — the choice depends on your preferred texture and brush type.