If you are thinking of having your hair cut shorter, it might be nice to donate it to a charity. This will usually then be used to make wigs for people who might be unwell. These wigs will be very high quality, as they will be made from real human hair and will look much more realistic.
Talk to your stylist before your haircut if you are thinking of donating your hair. They will be able to cut your hair in such a way as to make it suitable to send off to charity. It will need to be a certain length – check with the charity you are going to send it to. If you hair is too short, it probably cannot be used to make a wig.
You will also need to make sure you hair is in good condition. If you have very fine hair or lots of breakage, improve the condition before considering a cut.