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Callus-control for athelic hands

Buff and smooth excess calluses on your hands to help prevent painful tears and protect your grip 

Calluses protect your hands, but too much buildup can tear, crack, and slow you down. The Hand Guardian manages calluses by removing excess rough skin keeping your natural protective layer intact. This compact, purpose enginereed tool prevents rips, and keeps your grip ready for every workout, so you can rise, protected.

Real  people - Real results

Elias, Dubai

"Finally, something that keeps my hands smooth without killing my grip. I use it after every lifting session. It's game changer."

Nat, London

"I used to rip my calluses every week. Since using the Hand Guardian, my palms stay strong and tear-free. Even my manicurist loves it."

Luis, Montreal

"As a climber, my hands take a beating. This little tool keeps them in perfect shape. I won’t go back to anything else."

The science of callus care

1

Reduce risk of callus tears

Calluses build up due to repeated friction and pressure on the skin. Thick, raised calluses are more prone to catching on bars or equipment during lifts (especially deadlifts and pull-ups). When they rip, it creates an open wound that can limit training. Studies on skin biomechanics show that excessive thickening reduces flexibility, making the skin more likely to tear under shear forces.

​Source: Scott MJ Jr. et al., Cutis, 1992; Tollafield DR et al., J Foot Ankle Res, 2017.

2

Improve grip efficiency

Uneven calluses can create pressure points on the bar, decreasing the surface area of skin-bar contact. This can lead to slippage or require more grip strength to hold the same weight. Research on grip mechanics demonstrates that smoother skin-bar interfaces enhance friction distribution, improving lifting performance.

Source: Li Song et al., PMC, 2022.

3

Prevent infections

Torn calluses expose raw tissue, which is susceptible to bacterial infections such as cellulitis. Athletes have an increased risk of these infections due to shared gym equipment. Maintaining calluses at a manageable thickness reduces the likelihood of tears and subsequent infections, a concern supported by dermatological studies.

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Source: Tollafield DR et al., J Foot Ankle Res, 2017; Gurarie M., Verywell Health, 2025.

Strength within reach

BETTER GRIP

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Maximum grip, zero slip

SMOOTHER PALMS

Gym Workout

Stronger pulls

PAIN FREE LIFTS

Workout

No more taping

BUILD STRENGTH

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Not injuries

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Design engineered

We didn't just design.  We obsessively engineered.
We spent countless hours with our world-class product and industrial partners Punctuate Design, refining every curve, every contour, and every material choice to ensure it not only looks exceptional but performs flawlessly. Every prototype was pushed to its limits, tested in real-world conditions, and reimagined again and again until nothing was left to improve. The result?  Smooth fusion of design mastery and relentless testing that is built to perform as hard as you do.

©2025 Kahoo, Inc. All Rights Reserved. Kahoo® and Hand Guardian® are a registered trademark of Kahoo, Inc. 

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