kittУ тебя просто такой состав потожировых выделений, из-за которого струны быстро корродируют, особенно летом. Что ж теперь, из-за этого с гитарой завязывать ?
Просто после каждых занятий, еще протирай струны к примеру Dunlop
String Cleaner & Conditioner.
Michael Ross “Getting great guitar sound”, 1998Appropriate frequency of string changing de-pends on a number of factors:
1.
Your body chemistry. Do you perspire when you play, and
how corrosive is your sweat?
2. How long and how often do you play?
3. Do you live in a damp climate?
4. What brand of string do you use?
Depending on these factors, you may have to change your strings anywhere from every day to once a month.
Corrosive sweat and damp climates will require that you change your strings more often than will dry hands and climates.
If you play your guitar four to six hours a day, your strings will have to be changed more often than if you pick up your guitar once or twice a week.
... и добавил:http://www.guitarforbeginners.com/forum/index.php?/topic/11737-keeping-strings-in-good-shape-corrosive-sweat/http://www.tdpri.com/forum/archive/index.php/t-77074.html