D'Addario Two-Way Humidification System Conditioning Packets

good as requested

I tried the other restore packs but they never got over 45-47% after weeks. These brought humidity up from 35% to 40% in 24 hrs and then to 50% the day after. And that includes the 7 ply hard shell case! I learned the hard way. These are the only brand I'll use going forward. EDIT: The next ones had a hole in the sealed package and is prematurely aging. If it happens on next shipment, I'll contact Amazon immediately with photo and send it back. It should last 3 more weeks. I'll update then.

My acoustic guitar was severely dehydrated and the body had sunk to the point where the guitar was more or less unplayable.I purchased these with some hope that they may help but I was blown away by the results.After two weeks in it’s case with this kit the guitar had rehydrated to the point where it was once again playable and strings that had fallen almost completely dead were now alive again up and down the fretboard.If you have a dry, dry instrument before you give up on it these are definitely worth a try to correct it.Saved my guitar for sure.

Sono molto soddisfatto. li uso da 6 anni. Nella mia zono l'umidità durante l'anno varia dal 30% al 70%, ma all'interno del case l'umidità resta fissa fra il 47% e il 56% e soprattutto le variazioni d'umidità all'interno son moolto lente.

Worked perfectly to re-humidify my guitar which had dried out slightly and exhibited fretting out around the 12th to 14th string on B and upper E

Could not be easier! The packets turn hard when it is time to replace, only takes about 15 seconds to replace with new packets!