If you use a sticky bandage, make sure the sticky part isn’t touching the blister. This will be painful to pull off. Unless the blister ruptured or started draining, you don’t have to use any antibacterial cream on it.

If you got the blister while climbing, take a break for at least a few days and let it heal. If you can’t avoid grabbing or holding things while you have a blister on your hand, then you can use some moleskin to pad the area and reduce pressure on the blister.

Don’t peel the dead skin off, even if the blister drains. Keeping it in place helps prevent infections. You could also use petroleum jelly if you don’t have antibacterial ointment.

You should also see a doctor right away if you have a circulation problem or diabetes. This could cause a serious infection.

When drying the area, use a clean, dry towel or paper towel. Pat gently instead of rubbing, which could irritate the blister.

Petroleum jelly will help reduce friction on the blister. If the blister has already drained and you have an open wound, it will also help lock in moisture and promote faster healing. [8] X Trustworthy Source American Academy of Dermatology Professional organization made of over 20,000 certified dermatologists Go to source

You could also use this same trick to protect any cracks or cuts on your hands before you climb. If you used ointment or petroleum jelly on your hands, make sure it’s completely covered by the bandage to prevent slipping. If you use non-stick gauze to cover the blister, secure it down with medical tape before wrapping it with climbing tape.

Make sure the tape isn’t too tight or you’ll cut off circulation in your hands or feet. Don’t put climbing tape over the blister without covering it with a bandage first. Otherwise you could tear the blister when you remove the tape.

You could also pre-coat your hands with liquid chalk. This dries up any moisture on your hands and provides a good base for the powdered chalk.

Wearing the right shoes is also a good way to prevent blisters in the first place, so always wear high-quality shoes when you climb.