Holo Extra Strength Pen Refill Quantity:(3) Set of Three Comes with complete adapters

Comes with complete adapters

Carefully designed and clinically proven to get you whiter teeth in 1 week

Have an important event coming up soon and need to get whiter teeth now

100% vegan and cruelty-free

Ran out of gel from your Holo Teeth Whitening Kit

Holo Extra Strength Pen Refill Quantity:(3) Set of Three Comes with complete adaptersRan out of gel from your Holo Teeth Whitening Kit? Hold on to your Holo mouthpiece and maintain your pearly white teeth with our pen refills. You can get the regular Holo Pen Refills here. The extra strength pen refill is perfect for impatient people and procrastinators. Have an important event coming up soon and need to get whiter teeth now? This is for you. Whitens your teeth faster Safe for enamel 100% vegan and cruelty free Save (and get free