blister prevention spray


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what is it? 
Barrier4  is clinically proven to prevent blisters and irritation for enduring comfort and performance.

what does it do?
Creates a durable, invisible barrier that blocks friction on skin where shoes rub back and forth.

why is it the best?
Our proprietary formulation offers 20x the protection of most blister sticks.Plus, it’s flexible, sweat-resistant and able to withstand friction for ~6 hours.

why will you love it?
Because now you move faster, farther and longer without the fear of your shoes causing painful blisters or cuts that slow you down.  

Hypoallergenic. Dermatologist Tested. Vegan. Free of Phthalates & Parabens. Cruelty Free. Made in USA.

Dimethyl Ether, SD Alcohol, Acrylates Copolymer, (Purified Cosmetic-Grade) PEG-8, Dimethicone Copolyol Blend

Due to government restrictions on aerosol shipments, we cannot ship Barrier4 to Hawaii or Alaska at this time.

1.5 oz | 42.5 g

  • Because you don't have time for your feet to heal from blisters.

    From running shoes and sneakers to cleats, cycling shoes and everything in between, the styles and abrasive materials of most shoes can quickly become a blister-causing nightmare... especially with quick or repetitive motions for sports and activities. As you move, your shoe rubs back and forth on your skin and if the skin is not properly protected, it can cause a painful blister or cut that slows you down and takes weeks to heal.


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  • How To Use

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    Use before wearing sneakers, running shoes, hiking boots, cleats, cycling shoes or any other type of shoe that causes blisters, cuts, burns or irritation from friction.

    5 Tips For Best Results

    + Make sure skin is dry and clean before application. Lotions or moisture can prevent the coating from properly bonding with skin.

    + For maximum efficacy, it is important to allow the formulation to dry completely (~ 90 seconds per layer).

    + Renew or strengthen the barrier by spraying an additional layer. Two layers is recommended.

    + The coating is designed to naturally break down and start to flake off after ~6 hours, so that it can be removed with a wet washcloth or the Smooth Things Over file.

    + Avoid spraying on pedicured nails as the coating can dull their shine.



  • Product FAQs