How to Clean, Repair and Restore Water Brushes - Pentel Aquash - Derwent Water brushes 

I had one dirty Pentel Aquash water brush with just water and one Pentel Aquash filled with indian ink wash (india ink + water) that was totally clogged up and nothing came out. I followed the video instructions for both of them and now I have two very clean water brushes, one with water and another india ink wash, working just perfectly! Thank you very much!!

if it werent for this i would have bought a new waterbrush! you just saved me a couple of bucks, i thought mine were already broken turns out theres an easy fix to it! now it easily dispenses water again

Yooo! My brushes really needed this, thank you! I didn't even realize there was biomold in the tube!

You just saved my brush, thank you! I had stopped painting for a while and I wanted to go back to it, now I will!

Hooray! I was starting to think I was going to have to buy a new waterbrush but thanks to you, the old one seems to flowing well again. Thank you for such a clear and helpful explanation on what to do. You made it easy to fix!

Very helpful tip Jon!! :D Mine had all kinds of organisms in them like Jellyfish, sardines, and even a small octopus........ LOL just kidding! Thank you so much my friend ^^

Thank you for this! It was super helpful. Mine were so bad the foam actually rotted to a black mush. I was able to cut a tiny piece of soft sponge and replace it. After a thorough wash and rinse, it works wonders now, with great flow!

TFS...you just saved me from having to buy another set. I use distilled H2O and haven’t ever had a problem with growth of baddies BUT I have one brush that intermittently floods everything. So I gave your suggestion a go and wallah...the little white thing was barely pushed in. I pushed it in gradually and tried it several times until it now works perfectly. Would give you a hundred thumbs up if I could. Thanks again for the video and explanation.

I had clogged brushes that I thought were broken and now I feel dumb. They are all working just fine after I dismantled them to clean properly. Thank god I found your video by accident. I got so many water brushes now.

thank you so much! close to tears since it wasn't working and it's my favorite brush, working like new now!

great help! I had to change the sponge on mine because it was eroding away and it broke off. Quickly cut up a new piece of sponge and it was like new. Thanks from Portugal!

Thanks a billion for the tutorial. The internal mechanism on my brushpens was fitted so tightly I assumed it couldn't be disassembled, so I ended up having a couple of these brushpens that could only be used as brushes due to internal blockage. While I did end up damaging the black rim around the bristles on one of my pens trying to dislodge the interior, in the end it did come out and after a thorough cleaning the pen works again.

Great cleaning tutorial and the push I need to do mine. Thank you for showing us that it isn’t as scary as I thought it would be. I dread to think what is living in mine errr

Thank you! I actually use mine for sewing: they are great for rewetting temporary basting glue, removing water soluble markers or treating creases in delicate fabrics before ironing.

I thought my brush is broken 😥 i kinda worry me there. This vid really helps me so thank you for teaching me how to fix my watercolor pen brush!!! I'm impressed that it's starting to work again!! Thank you again 😊

This was so helpful! I was super freaked when I thought I saw mold growing in my brushes. But thanks to you, I at least know how to counter it. You are amazing!

This tutorial saved my brushes (and my nerves). Thanks a lot!

Didn’t know they came apart like that, thanks so much! Very clear instructions😊

Thank you so so much, this saved my water brushes and stopped from spending money on new ones 💓💓💓

Omg this video saved me so much time because I was in the middle of an art project when my brush stop working and I thought I broke it but since then I be cleaned it out and it works like new again.

I tried to un screw the topp black part but it didn't work 😓 so I looked this up and I watched your video and I was mind blown 😅 thank you so much for this !

I really appreciated this and you saved me buying replacements so thank you :)

Thank you for this helpful video! I'm new to water brushes and intimidated by cleaning them but this made me feel much better.

Thank you! This helped get my small Pentel brush flowing with water again!

Thank you so MUCH for this! Aquabrush restored ✅ God bless you!

You are saving water brushes one at the time - or in my case 6 in one time Thank you!

Just purchased my very first set of brushes for painting my mounted fish and this post will help tremendously ! ! ! Thank you Sir .

Thank you so much for this easy to follow and in depth video. My pens look brand new 👍👍👍

Fantastic! One of my Pentels stopped flowing and was just about to chuck it, thank you for saving me some cash :)

Perfect timing for me, Smoothie. Thank you for this excellent explanation!

Thank you! I was worried when mine stopped allowing water to flow through, and was thinking I'd have to purchase a brand new brush. Followed your instructions and it works like new again!

Thank you so much! I was really confused and thought I'd broken it somehow. I didn't even know how to dismantle it at first. Thank you for this help!

This video was a lifesaver! Thank you!

So helpful thankyou! I just keep grabbing another when not working so well. I can now go back and revive my faves. Thankyou so much!

Excellent video. Thorough, easy to follow, and well produced. Great job sir.

Wonderfully helpful video, well presented and your beautiful voice didn’t hurt either...Thank you❤️☺️❤️

You’re awesome! 😊 Thank you for sharing this! 🙏🏻🎨🖌

OMG!! Just clean and wash it works for me!! I was think about to buy a new brush, but this works!! Thank you sooooo much!!

Never knew I could open the whole thing. Thank you so much for the video ❤❤❤

I didn't know they could be taken apart so easily, thank you very much! This fixed mine!

Thanks, it worked like a charm!

Great video. I only discovered how to strip and clean them some months ago - a friends young daughter showed me - kids Eh... what a revelation. I have always struggled with mould in the barrels and flow problems, and I had probably a dozen or so dud ones in my draw that I've had to replace over the years. I would clean out the barrels with a bent pipe cleaner but the regulator bit would get gunked up with slime and stop flowing to the point of being unusable. I find a solution of "Oxi" (Stuff in the pink tubs) works well, it actually helps break down the algae and other gunk. Another thing I have started doing now is alternating my two sets every few weeks in this hot weather, giving the used set a quick clean then leave them to dry out thoroughly in an old mobile phone box before I reassemble them. I find having a clean dry set ready to go, less frustrating than fiddling around once one starts playing up.

Thank you kind man, I followed the instruction and my water brush is just as good as new! I just reassembled it in few minutes and voila - it's not clogged

Thank you!!! It worked on my kuretake water brush!

Thank you very much, I have a pentel brush and it’s been months since it worked properly

I was about to buy a New one! Thank you very much

Thank you for the clear guide, works like a charm!

Great video and information... very helpful! Thank you - much appreciated.

Thank you so much! I have the same water brushes and they are hard to come by from where I live. I have to place mail order and have them shipped so I really can't afford to throw them away. I panicked when my Aquash wasn't dispensing water. You instructions were clear and easy to follow! My water brushes are now working perfectly fine and cleaner, too!

I was struggling to clean my brush for a couple of years, didn't know why it never came out well, like... it always looking dirty. AND FINALLY, after watching your video, my brush is literally looking like brand new and works very well! Thank you sooo much for sharing this info, you saved a thousand of brushes!!

You have saved my life, thank you so much for this video

Great video! Thanks for doing this. I wish I had this video as reference a few months ago when I cleaned mine. Very helpful!!!

Thanks!!! This video helped me tons! I used The Masters brush cleaner to clean the bristles. Worked well.

Thanks for this excellent information!

Thank you sir! I too cleaned my india ink pen. It looks lovely.

Great advice! Thanks!

I wondered How to clean them. Thank you So much.

great video!Thank you so much!

Just want to thank you for this ! My brush was not dispersing water at all and cleaning out the little white tub worked wonders!

Thank you very much for your advice

I'm usually skeptical with these kinda things, but it does work. 100%! I didn't have actual bleach but bathroom bleach and I think any bleach works because I only waited for about 30 minutes, put it together and after 3 months of dealing with a clogged brush, it works! Thank you so much!

Thank you very much. I did all of them and it helped. :)

Thank you so much for this video! I was actually going to throw away a Pentel water brush because I thought it was dirty and not working well. It turns out it just needs a bit of cleaning. Currently have mine soaking in water/bleach!

Thank you so much for sharing, it was very helpful! ❤️

Thank You so much I stored mine away for several months with moist bristles and when I went to use them they reeked of mildew now I know it's safe for bleach water

Thank you so much for this video.

Thank you! This is so useful!

Thank you! It really helped me

This is exactly what I needed

Thanks for showing us.

So helpful! Thank you!!

Obrigada pelo seu vídeo! Eu salvei minha caneta!

This works! I did this with the pen that came with the koi watercolor set it wasn’t flowing at all now it is

Thank you. Very helpful.

Thank you sm been trying to think of a way to get the gunk out !

That was awesome. Thank you very much.

thank you so much,it saved my money going waste!!

This helped so much thank you sir 🙃

Thank you sir. It is very helpful!

As with the other many happy successes mentioned in these comments, I, too, used your approach and solved the "no flow" problem I had on a Pentel like yours. Thank you for such a straightforward tutorial:-) BTW, I used a small drinking straw that fit perfectly over the bristle end to help encourage the pushing needed to get everything apart at that point you were coaxing it with the tweezers.

Many thanks I saved a few

Thannk you! I use a different brand but couldnt figure out how to get the bristls out to clean!

Thanks for this bud !

Pipe cleaners, straw cleaners and even eyebrow/eyelash brushes work really well to scrub away the algae!

thank you, you saved my water brush!!

Thanks for the information.

Thanks a lot ! that solved my problem 😆

Oh my goodness... this video was soooo relaxing... (Or was that just me?)

Thank you💙👍

omg thank you so much for this video!! saved me from getting new brushes so thanks alot

Thanks for this. I just pulled out my water brushes (varying brands) after too long and realized i never emptied them 🤢 i'm going to try and clean them out tonight

Tadah! 🎉 i didnt even need to wash it (literally brand new only used it once sinc eit never worked properly. just took it apart like you showed and put it back together and it works so much better now

Thank you so mush

Thank u !

Gracias, gracias, gracias!!!

Thanks!!

Thank you!

Thank you so much, my brush had algae in it and now I have a perfect way to clean it!

Thanks

Tysm!