Blister Prevention and Treatment

When to use this

Before you leave the trailhead — not after you feel a hot spot.

• Any hike longer than 3 miles
• Breaking in new boots before a big trip
• Managing hot spots before they become blisters mid-hike

See it done

What you need

• Moisture-wicking wool or synthetic hiking socks (cotton = guaranteed blisters)
• Leukotape P or moleskin for hot spots
• Properly fitted boots broken in before the trip
• Blister kit: alcohol wipe, a sterile needle, antibiotic ointment, a bandage

Step by step

1. 1.Prevention first: wear moisture-wicking socks, never cotton. Wool socks are warm but blister-resistant even when wet.
2. 2.Lace boots snugly — heel slippage is the primary cause of heel blisters. Use the "heel lock" lacing technique on any boot with an extra eyelet at the top.
3. 3.When you feel a hot spot (warmth or friction), stop immediately. Apply Leukotape directly to clean, dry skin over the hot spot. It stays on for days.
4. 4.If a blister forms but is intact: leave it. The fluid is sterile and protective. Cover with moleskin with a donut hole cut around the blister.
5. 5.If a blister is large and painful: sterilize a needle with an alcohol wipe. Pierce the edge (not the top) at two points. Press fluid out gently. Cover with antibiotic ointment and a bandage.
6. 6.Keep the area dry and covered for the rest of the hike.

Pro tips

• Leukotape is dramatically better than moleskin for prevention. It stays put through sweat and water.
• Break in boots on 2–3 day hikes over several weeks before a long trip. No boot is broken in on its first outing.
• Two-sock system: a thin liner sock under a thick hiking sock eliminates friction at the foot entirely.

Common mistakes

• Wearing cotton socks — they hold moisture against skin and are the single biggest blister cause.
• Waiting to treat until the blister fully forms. A 30-second Leukotape application at the hot spot prevents a 3-day problem.
• Popping a blister at the top — the roof is the best bandage you have. Pierce the side instead.

Continue learning

• Hiking & Navigation

  Day Hike Essentials

  The 10 things that go in every day pack — and why.