How Do You Soften a Hardened Gel Brush?

You’ve picked up your favourite gel brush ready to start a set… and the bristles are completely stiff.

Before you reach for the acetone, stop!

A hardened gel brush doesn’t necessarily mean it’s ruined. In many cases, the bristles have become stiff because residual gel has thickened between uses and the brush can be softened again.

However, there’s an important difference between a brush containing uncured gel that has become stiff and a brush where the gel has actually cured inside the bristles.

Here’s how to tell the difference, how to soften your gel brush correctly and how to prevent it from happening again.

Why has my gel brush gone hard?

There are several reasons a gel brush can become stiff.

Residual gel may have been left within the bristles after your previous service, the brush may not have been stored correctly or it may have been exposed to UV light.

Remember: gel doesn’t only cure when you deliberately put it inside your nail lamp.

UV exposure can come from your curing lamp, sunlight and even working close to a window. If your brush contains gel and is repeatedly exposed to UV light, that product can begin to cure within the bristles.

This is why correct brush storage is so important.

First: is the gel cured or just stiff?

Before trying to soften your brush, look closely at the bristles.

If the brush is stiff but the bristles still have some flexibility when gently manipulated, you may simply have residual uncured gel within them.

This can often be worked out.

If the bristles are completely solid, stuck together or you can see hardened pieces of cured gel within the brush, the product may have polymerised.

Unfortunately, once gel has fully cured inside the bristles, it can be extremely difficult or impossible to restore the brush without damaging it.

Prevention is much easier than trying to rescue a brush containing cured gel.

How do you soften a stiff gel brush?

Start with a small amount of the gel product you normally use with the brush, or an appropriate clear gel.

Work a small amount gently through the bristles.

Rather than aggressively scrubbing the brush, use gentle movements to encourage the fresh product to work into the existing residue and soften the bristles.

You can work the brush backwards and forwards on a clean palette, gradually loosening the product.

Be patient.

Once the bristles become flexible again, remove the excess product carefully and gently reshape the brush.

The aim is to restore flexibility without pulling, splitting or damaging the bristles.

Should you clean a hardened gel brush with acetone?

Reaching for acetone might seem like the obvious solution, but repeatedly soaking your gel brushes in acetone isn’t the best way to care for them.

Acetone is a powerful solvent. While it can break down certain nail products, it can also be extremely drying to brush fibres and may affect the longevity and condition of your brush.

It can also travel into the ferrule - the metal section connecting the bristles to the handle where it may affect the adhesive holding your brush together.

Over time, this can contribute to shedding, damaged bristles or a brush losing its shape.

Your aim shouldn’t be to strip your gel brush completely clean after every use.

Should you use cuticle oil to soften a gel brush?

No.

You may have seen advice online recommending cuticle oil as a way to soften or condition nail brushes, but we don’t recommend it.

Oil can travel up into the ferrule and potentially interfere with the adhesive securing the bristles.

More importantly, oil left within the brush can contaminate the gel products you’re using.

Gel application relies on careful product chemistry and adhesion. Introducing oil into your brush and subsequently into your gel isn’t something you want to risk.

Keep your cuticle oil for your cuticles, not your brushes!

What if gel has cured inside my brush?

If gel has completely cured within the bristles, unfortunately there isn’t always a magic fix.

Trying to physically pull cured gel from the brush can damage or remove bristles. Aggressive soaking can also compromise the brush without successfully removing product from deep within it.

If only a very small amount has begun to cure, you may be able to gently work the affected bristles, but once the structure of the brush has been compromised it may no longer be suitable for precision work.

This is particularly important with nail art brushes.

A liner or detail brush relies on its bristles sitting in a very specific shape. Even a tiny amount of cured product can cause the bristles to separate, making fine lines and detailed work much more difficult.

Sometimes, replacing the brush is the better option.

How should you clean a gel brush after use?

Gel brushes don’t necessarily need to look completely product free after every service.

Removing every trace of gel using strong solvents can cause more wear than necessary.

Instead, remove excess product carefully and clean the brush appropriately for the gel system you’ve been using.

Gently work the bristles rather than scrubbing or pulling them.

Once finished, reshape the brush so the bristles return to their correct position before storing it.

Always follow the recommendations for both your brush and the gel system you’re using.

Keep your gel brushes away from your nail lamp

This sounds obvious, but it’s incredibly easy to do.

You finish painting a nail, put your brush down beside your lamp and cure your client’s hand.

Your brush may now be sitting directly in escaping UV/LED light.

Do this repeatedly throughout the day and residual gel within the brush can gradually begin to cure.

Create a dedicated place on your desk for your brushes away from your curing lamp.

When you’ve finished using them, replace their lids or caps where provided.

Don’t forget about sunlight

Your nail lamp isn’t the only UV source in your salon.

Natural daylight contains UV.

If your desk is positioned next to a window, leaving an uncovered gel brush on the desk can expose the residual product within its bristles to UV light.

This is particularly important on bright days.

Store gel brushes covered, away from direct sunlight and away from your curing lamp.

Why do my gel brush bristles keep splitting?

If your brush has softened but the bristles no longer return to their original shape, the brush itself may have become damaged.

Splitting can happen because of:

• Cured product trapped between the bristles
• Aggressive cleaning
• Repeated solvent exposure
• Pulling or scraping the bristles
• Incorrect storage
• Physical damage to the brush

Once the bristles have permanently lost their shape, you’ll struggle to achieve the same precision.

This is especially noticeable with French, liner and detail brushes where the exact shape of the bristles is fundamental to the finished result.

How can you stop a gel brush from going hard?

Prevention comes down to good brush habits.

Remove excess product after use, keep the bristles correctly shaped and protect the brush from UV exposure.

• Don’t leave your brushes uncovered beside your lamp.
• Don’t store them in direct sunlight.
• Don’t aggressively scrub the bristles.
• Don’t repeatedly soak them in acetone.
• And don’t fill them with cuticle oil in an attempt to condition them.
• Treat your brushes like the precision tools they are.

Can a hardened gel brush be saved?

If the product is still uncured, often yes.

Gently working fresh gel through the bristles can help soften residual product and restore the flexibility of the brush.

If the gel has fully cured, however, the damage may be permanent.

The best way to save a hardened gel brush is therefore to prevent it from curing in the first place.

Good quality brushes can last when they’re cared for correctly, so protect your nail art  brushes from UV exposure, clean them appropriately and store them correctly between services.

Your brush should be doing the precision work for you, not making you fight against hardened, damaged bristles.