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How-To

How to Prevent and Treat Blisters Hiking

Friction, moisture, and heat are the three causes — and hot spots are the warning you should never walk through.

Written by William • Updated August 2026 • 6 min read

Blisters come from friction against skin that is warm and damp. Every prevention technique attacks one of those three factors, and the single most effective habit is stopping the moment you feel a hot spot rather than pushing on to the next break.

  1. 1

    Fix the fit first

    Most blisters are a fit problem wearing a friction disguise. Boots that are too short bruise toes on descents; too much volume lets the foot slide. Lacing technique — particularly a heel lock — stops the heel lifting, which is where a large share of blisters start.

  2. 2

    Manage moisture

    Damp skin blisters far more readily than dry skin. Merino or synthetic socks move moisture away; cotton holds it against the foot and is the single worst choice. On long hot days, changing into a dry pair of socks at lunch is a genuinely effective and underused technique.

  3. 3

    Reduce friction before you need to

    Anti-chafe balm on known problem areas, or tape applied preventatively to spots that always blister. Leukotape in particular sticks through hours of sweat where standard bandages peel. If you know exactly where you blister, tape it before you leave the trailhead rather than after mile six.

  4. 4

    Stop at the hot spot, every time

    A hot spot is the warm, tender feeling that precedes a blister by some minutes. That is the moment to stop, take the boot off, dry the foot, and tape. Walking another two miles to a nice viewpoint turns a two-minute fix into several days of limping. This is the single highest-value habit here.

  5. 5

    Treat a blister that has already formed

    Small intact blisters are usually best left unbroken and covered with a padded dressing that removes pressure. Larger or painful ones are commonly drained with a sterilised needle at the edge while leaving the roof of skin in place as a natural cover, then dressed. Keep it clean, watch for redness spreading, increasing pain, or discharge, and see a medical professional if any of those appear or if you have diabetes or circulation problems.

  6. 6

    Build a small foot kit

    Leukotape, a blister-specific hydrocolloid dressing, an anti-chafe balm, a small pair of scissors, and alcohol wipes. That is a few ounces and it prevents most trips being derailed by feet.

    Related gear guidesSocks, boots, and fit basics
    Read Guide →

Prevention Products

ProductUsePrice
Leukotape PPreventative taping that stays on$15
Body GlideAnti-friction balm$12
2Toms Blister ShieldMoisture-reducing powder$10
Dr. Scholl's Blister DefenseStick balm for spot use$8

Frequently Asked Questions

Should I pop a blister?
Small intact blisters are usually best left alone and padded. Larger painful ones are often drained at the edge with a sterilised needle while leaving the skin roof intact. If you have diabetes, circulation problems, or any sign of infection, see a medical professional rather than treating it yourself.
What is the best tape for blisters?
Leukotape P is widely preferred because it stays adhered through hours of sweat and movement where standard bandages lift within an hour.
Do double-layer socks work?
For many people, yes. They let the two sock layers slide against each other instead of the sock sliding against skin, which removes friction at the point it matters.