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    RezBlock XL from 420 Science - - available at 420 Science - The most trusted online headshop.

    Customer Reviews

    4.9 Based on 39 Reviews
    5 ★
    95% 
    37
    4 ★
    5% 
    2
    3 ★
    0% 
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    2 ★
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    1 ★
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    RG
    10/08/2019
    Reid G.
    United States United States

    A true staple

    Always will keep this in my "must have" category. It works great and really does cut down on cleaning time. Keeping the buildup from getting a grip on your glass makes such a difference! 10/10 would and have recommend(ed)!

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    CL
    09/29/2019
    Caitlin L.
    United States United States

    Works like magic

    Great stuff! Makes it super easy to clean your pipe.

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    A 420 Science Customer
    ZM
    09/27/2019
    Zeds M.
    Canada Canada

    AMAZING Product Support!

    I contacted customer support about my last bottle of RezBlock and they replaced the entire order. They just 'believed me' and made it right. Wow. How... refreshing. I am positively Lifted! Home run gang. Thanks

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