Guitar Humidifiers for guitar lovers
Vertigo Single
Only humidify when your guitar needs it.
Not all the time.

LEAK FREE
90ml Capacity. No Lids - No Caps - No Packs
FREE SHIPPING
ORDER NOW
Guitar Humidifiers for guitar lovers
Vertigo System
Only humidify when your guitar needs it.
Not all the time.

LEAK FREE
90ml Capacity. No Lids - No Caps - No Packs
FREE SHIPPING
ORDER NOW
Best on the market guitar humidifier
Best on the market guitar humidifier
SGK
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Reviewed in the United States on August 18, 2022
I used many different guitar humidifiers over the years. The Prolix humidifier is the best, it holds 90 cc of water without dripping. I tie it to a string, put it in my sound hole and then cover the hole with a suppressor to keep the moisture inside the instrument. Plus I have an air humidifier I use during the winter.
The Vertigo Single re-hydrated my guitar quickly making it sound and play great again.
The Vertigo Single re-hydrated my guitar quickly making it sound and play great again.
Richard Davis
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Reviewed in the United States on April 18, 2022
I was a bit skeptical, but it worked like a dream. I had a hairline fracture in the back of a $5,000 acoustic from humidity and temp changes. I moved the guitar to a more temp stable room in my house, dropped in this humidifier, and after about 5 days the crack has vanished entirely. The wood re-humidified and swelled ever so slightly (which was my goal, of course) to perfectly fix the hairline fracture.I love this product because it does what it was made to do very well. My guitar was seriously dried out and I needed to re-humidify it because it's playability and sound had degraded to an almost unplayable point. I had been using another product that you insert between the middle two strings with a moist sponge inside. But that product may work to keep a guitar humidified but not to recover a dried-out guitar. I bought the Vertigo Single and with only one fill and about a week, my guitar was playing significantly better, and the fret buzz was gone. On my second fill of the Vertigo Single, I mistakenly soaked it longer than the recommended 20 minutes and overfilled it causing some of the polymer gel to be forced out onto the exterior. I wiped it off and let it dry out for a day and then put it back in my guitar where it continued to work well. Lesson learned...don't lose track of time and allow the Vertigo Single to overfill. Highly recommend the Vertigo Single Guitar Humidifier.
Really, really worth it.
Really, really worth it.
Rawr
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Reviewed in the United States on March 7, 2022
I was a bit skeptical, but it worked like a dream. I had a hairline fracture in the back of a $5,000 acoustic from humidity and temp changes. I moved the guitar to a more temp stable room in my house, dropped in this humidifier, and after about 5 days the crack has vanished entirely. The wood re-humidified and swelled ever so slightly (which was my goal, of course) to perfectly fix the hairline fracture.
Combine with humidifier packs for easy maintenance.
Combine with humidifier packs for easy maintenance.
Paul D.
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Reviewed in the United States on July 11, 2021
Perfect to combine with the Diodarrio humidifier packs. Those packs maintain the right humidity and these will actually rehumidify those packets. I live in Denver which is a high desert, so it gets really dry here. Combining those two has allowed me to easily maintain my acoustic guitar.
Works great. 💯
Works great. 💯
Ripley
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Reviewed in the United States on April 13, 2021
Have a backup, all wood guitar. I had put in case, and had not touched in months. Pulled it out, and 1st and 2nd sting were fretting out at 11th fret on up. Filled up product, and put in guitar, and guitar back in case. After 4 days, no more fretting out. Plays like the when I bought it. 😁
It really works and so simple
It really works and so simple
Michael Teach
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Reviewed in the United States on July 5, 2021
It was exactly as advertised. It was flawless. To this day, I haven't the faintest idea how is works, but I do know that it definitely Works.
As advertised
As advertised
Rhodey Mark
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Reviewed in the United States on December 24, 2020
Just refilled it after three weeks, and it appears to be exactly as claimed. Left in the soundhole of a guitar that stays out in the heated air, and the guitar seems happy with the process. I was concerned about the Fishman wiring and it sitting near the output jack but it looks like it coexists peacefully with the electronics. I would put this in the case vs soundhole for an enclosed instrument, but if it is a daily player drop it in and forget it for a couple weeks.
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FAST EFFECTIVE RELIEF FROM FRET BUZZ & CRACKING TONE WOOD

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Only humidify when your guitar needs it. Not all the time. Too much moisture can be equally damaging.

Only humidify when you need to

Drop in the humidifier when the action gets too low, and remove it when that sweet action returns.

If you keep your guitar in a case, monitor the humidity inside the sound hole. When it drops below 45% RH you will know it is time to humidify, and when it exceeds 55% RH you will know it’s time to stop.

Finally, don’t be fooled by the outdoor humidity. Relative Humidity is temperature dependent. As such, heated indoor air is often much drier than the air outside.

Feel the Action

In severe cases you can see a dry or swollen guitar just by looking at the profile. But long before you see it, you will feel it when you play.

Too much Moisture Content will cause the bridge to lift, resulting in high action making it much harder to play, while too little, will cause the bridge to sink, lowering the action and causing fret buzz.

The sound of the guitar is also another little tell-tale sign, albeit less obvious. A guitar with the right moisture content will have a fuller sound than one that is overly dry.

Feel-the-action
Coming back from the crack
Seeing is believing
Zen & the Art of Humidity
Discover More
Moisture Content. Using your guitar as a hygrometer
Educational

What you need to know about RH (Relative Humidity) and MC (Moisture Content)

Why should I humidify?

The wood your guitar is made from is a living, breathing material. It slowly absorbs moisture from the air when it is humid, and slowly releases it when it is dry. This causes it to expand and contract, which affects the action (playability), structural integrity and resonance of your guitar, which is why you need to humidify.

How does humidity affect my guitar?

When it is humid, the body slowly swells as it absorbs moisture from the air. Conversely, when it is dry, the body slowly shrinks as it loses moisture to the air. The amount of moisture in the wood is known as moisture content (MC).

What do humidifiers do?
Humidifiers work through the diffusion of water vapor with the air. Lower vapor pressure in the air causes water to evaporate from the humidifier and be absorbed by the air, balancing the vapor pressure throughout. This is known as the process of equilibration. Similarly, wood gains or loses moisture by equilibrating with the air around it, but at a much slower rate. This is good because it means that you don’t need to supplement the humidity all the time – you should only humidify when your guitar needs it.

What is the ideal humidity?

Most manufacturers use tone wood that has been equilibrated to a 50% Relative Humidity (RH) environment. Hence the ideal humidity 
is 50% RH. However, it is the Moisture Content (MC) of the wood we are more concerned about, not necessarily the humidity of the air. Luckily, wood is slow to equilibrate, making it immune to daily fluctuations of high and low humidity.

As such, it is a myth that you must maintain an absolute 50% RH continuously. Instead your aim should be to maintain a 
long term average of 45-55% – nominally 50%.

Does temperature affect humidity? 

Completely and all the time. Humidity is relative to the capacity of the air to absorb moisture – in vapor form. Altitude also affects the capacity for air to absorb moisture, as well as locations that have low water levels in the land mass, such as deserts. Conversely cold air has less capacity to absorb water vapor which is why as you heat your home in winter, the air volume increases, but the Relative Humidity drops to dangerous levels for wooden instruments. 

What if I don’t humidify?
If you don’t humidify, you may be playing a game of Russian roulette with your guitar. Changes in MC will affect the action (playability) of your guitar, the resonance of the soundboard, and can even result in structural failures such as failed glue joints, 
as well as cracks in the body.

If I live in a humid climate 
do I still need to humidify?
It really depends. Heating and air conditioning can significantly affect indoor humidity, so you cannot always rely on outdoor humidity as your guide. Ideally you should measure the humidity in the room your guitars live in before making a decision.

Should I humidify all the time?

Only humidify when your guitar needs it. If you humidify all the time you risk adding too much moisture to the wood, which can be as bad as being too dry. Think of it in the same way as heating your home. The furnace only runs when it needs 
to, not all the time.

How should I humidify?
It depends. 
If you keep your guitar out, play often, 
and it was set up professionally, then we’d recommend using the action (playability) of your guitar as your guide of when to humidify and when to stop. Be warned that if you keep your guitar entombed in a case, you must use a fully functional hygrometer and monitor it daily to prevent over humidification.

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