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About 500-PSI Mask Defog

500 PSI Mask Defog is without question the Clearest, Longest Acting and Most Effective Defog on the market. One-Application Works for at least three dives in one day. Cleans your Mask each time you use it. Wet or Dry Application, has the Consistency of Extra-Thick Toothpaste, and when applied to the lens typically lasts all day long. 500-PSI Mask Defog comes in 2 or 4 fl oz (59 or 60 ml) size with a 2 fl oz (30 ml) available with a Carabiner Clip.

The 500-PSI Mask Defog is commonly used for All Diving Applications, Cold Water, Professional, Recreation, Warm Water and more. The 500-PSI Mask Defog is most used by customers who consider themselves to be a Advanced, Recreational Diver among others. The 500-PSI Mask Defog is popular because customers like the following qualities of the 500-PSI Mask Defog: Easy To Use, Functional, Improves Diving Experience, Lightweight.

500-PSI Mask Defog Features

  • De-Fogs Sports Lenses
  • Great for Snorkel or Dive Masks
  • Clearest Longest Acting Defogger
  • One Application/Three Dives
  • Cleans Lens Each Time
  • Wet or Dry Application
  • Applicator: Spray
  • Content: 2 or 4 fl oz (59 or 118 ml)
  • 2 fl oz (59 ml) Available with Carabiner Clip

500-PSI Mask Defog Specifications

Purpose
De-Fog Lenses
Size
2 Or 4 Fl Oz (59 Or 118 Ml)
Biodegradable
Yes
Removes
Condensation And Debris
Applicator
Spray
Available in the Following Sizes:
2 oz. With Carabiner, 2 oz., 4 oz.
Weight [with packaging]
2 oz., 2 oz. With Carabiner: 0.2 lb,
4 oz.: 0.25 lb

Mask Defog Customer Reviews

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by PowerReviews
500-PSI Mask Defog
 
4.7

(based on 23 reviews)

Ratings Distribution

  • 5 Stars

     

    (19)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

95%

of respondents would recommend this to a friend.

Pros

  • Easy to use (17)
  • Improves diving experience (16)
  • Functional (12)
  • Lightweight (8)

Cons

    Best Uses

    • All diving applications (9)
    • Warm water (9)
    • Recreation (8)
    • Cold water (7)
    • Professional (7)
      • Reviewer Profile:
      • Advanced (6), Recreational diver (5), Divemaster (3)
      • Was this a gift?:
      • No (9)

    Most Liked Positive Review

     

    A great defog at a great value

    As a dive master, it is imperative that I have unimpeded vision, and life is much simpler if the divers I'm leading can see as well. PSI 500 is an essential tool in...Read complete review

    As a dive master, it is imperative that I have unimpeded vision, and life is much simpler if the divers I'm leading can see as well. PSI 500 is an essential tool in my diving arsenal which allows me to accomplish this aim. Whether a person is extremely nervous (and so sweating profusely underwater), or the mask lense has not been properly cleaned, PSI 500 keeps masks fog free for the entire dive. While it almost always lasts the entire day, I apply after each dive for extra insurance.

    The gimick with PSI 500 is that it does not appear to be a large quantity of defog for the price. Do not be fooled! It requires far less PSI 500 to defog a mask than other defogs. (e.g. apply as little as you can to be able to smear the entire lense, and this is sufficient) As such, one small container of PSI 500 lasts hundreds of dives. (Between my 4 bottles rolling around, I couldn't say exactly how many hundreds)

    In summary, myself, and the dive shop I work with have found this to be the best defog on the market. Others do work well, but not as well.

    VS

    Most Liked Negative Review

     

    It's OK but it leaves grit in my mask

    I know that some people love this stuff. I got it as part of a mask/snorkel/fin package. It works fine but it leaves a gritty residue around the borders of my mask...Read complete review

    I know that some people love this stuff. I got it as part of a mask/snorkel/fin package. It works fine but it leaves a gritty residue around the borders of my mask that I have to scrub out at the end of the day.

    I switched to "Spit" or Mcnett's "SeaGold". They work as well or better and i don't leave the gritty mess.

    I gave the 500-PSI to a fellow in our Dive Club who swears by it and says he doesn't mind the grit so I guess it's just a personal choice.

    Reviewed by 23 customers

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    5.0

    Works great

    By Sarge

    from Michigan

    About Me Advanced

    Verified Buyer

    Pros

      Cons

        Best Uses

          Comments about 500-PSI Mask Defog:

          Thick consistency, rub on, rinse off, CLEAR.

          • Was this a gift?:
          • No

          Comment on this review

           
          5.0

          Best defog on the market

          By Ghost Diver

          from Phoenix, AZ

          About Me Advanced

          Verified Buyer

          Pros

          • Easy To Use
          • Functional
          • Improves Diving Experience

          Cons

            Best Uses

            • All Diving Applications

            Comments about 500-PSI Mask Defog:

            I've been using this defog for over 8 years. I haven't seen any other defog that works as well..

            • Was this a gift?:
            • No

            Comment on this review

             
            5.0

            VERY GOOD PRODUCT!!!

            By Dallsheep

            from Charlotte NC

            About Me Advanced

            Verified Buyer

            Pros

            • Easy To Use
            • Improves Diving Experience
            • Lightweight

            Cons

              Best Uses

              • All Diving Applications
              • Cold Water
              • Professional
              • Recreation
              • Warm Water

              Comments about 500-PSI Mask Defog:

              PSI 500 defogger is an excellent product!!! Put it in your mask before a dive scrub it around a good rinse and you are on your way with a mask that will not fog up.

              • Was this a gift?:
              • No

              Comment on this review

               
              5.0

              I can see!!

              By Donald

              from Elkidge, MD

              About Me Advanced

              Verified Buyer

              Pros

              • Easy To Use
              • Functional
              • Improves Diving Experience
              • Lightweight
              • Solid Construction

              Cons

                Best Uses

                • All Diving Applications
                • Professional
                • Recreation
                • Warm Water

                Comments about 500-PSI Mask Defog:

                500 PSI mask defogger is great. One application works for more then one dive. Really don't have to worry any more about my mask fogging up on that one dive you don't want to miss see!

                • Was this a gift?:
                • No

                Comment on this review

                 
                5.0

                Perfect. It doesn't get any better

                By juliette1417

                from chicago, il

                About Me Beginner

                Verified Buyer

                Pros

                • Easy To Use
                • Improves Diving Experience
                • Lightweight

                Cons

                  Best Uses

                    Comments about 500-PSI Mask Defog:

                    i love this stuff & the fact that it doesn't burn my eyes like other defogs i've tried.

                    • Was this a gift?:
                    • No

                    Comment on this review

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                    WYATT H  I've found it to be the best I've ever used.
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