Search  for anything...

Mask Defog | Reef Friendly Defogger Coating Anti Fog Mask for Glasses, Snorkel Mask, Scuba Divers, Ski Goggles and Sports Glasses Equipment by Stream2Sea

  • Based on 1,339 reviews
Condition: New
Checking for product changes
$11.95 Why this price?
Save $38.04 was $49.99

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, May 22
Order within 22 hours and 56 minutes
Available payment plans shown during checkout

Style: 2 Fl Oz


Features

  • Uses anti fog formula which is safe to use on snorkeling masks, diving goggles, skiing goggles, safety glasses, swimming goggles, or any glass or plastic lenses.
  • Fast and easy application by dripping a small amount on the inside of the lenses, use your finger to rub completely over the lens, add a small amount of water and rub the defogger to remove any streaks, pour the liquid out when ready to use.
  • This defogger is nonabrasive and safe for use on all glass and plastic lenses.
  • Tested and proven safe for humans, freshwater and saltwater marine life making it reef safe for use in any body of water.
  • Whether you are in the office or under the water this will keep your glasses or goggles cleaner and will help you see clearer for longer.

Brand: STREAM 2 SEA


Frame Type: Rimless


Frame Material: Plastic


Special Feature: Anti Fog


Size: 2 Fl Oz (Pack of 1)


Item Package Dimensions L x W x H: ‎6.06 x 2.56 x 1.61 inches


Package Weight: ‎0.09 Kilograms


Item Weight: ‎0.07 Kilograms


Brand Name: ‎STREAM 2 SEA


Suggested Users: ‎Unisex-adult


Number of Items: ‎1


Manufacturer: ‎STREAM 2 SEA


Part Number: ‎DEFOG3


Style: ‎2 Fl Oz


Size: ‎2 Fl Oz (Pack of 1)


Date First Available: December 11, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • STREAM 2 SEA Defog -and- OMID swim goggles are GREAT together
Style: 2 Fl Oz
On July 1, 2022 I purchased “2 oz. STREAM-2-SEA reef friendly Mask & Googles Defogger”,,, along with a pair of “OMID Comfortable Polarized Anti-Fog Swimming Goggles” (smoke, all black frame). I swim open water (quarry lake) 3-5 x’s per week during the warmer months, swimming non-stop for 60 to 120 minutes. I’d been using “Vanquisher 2.0” goggles the past several years but, despite correct adjustment, they would always begin digging into my eye sockets after an hour or so, and left me with a bad case of ‘raccoon eyes’. I decided to try out the OMID goggles, seeking greater comfort. The OMID goggles feature softer, larger eye cushions that are dramatically more comfortable. They truly do provide greatly-improved panoramic vision. The inner surface of the contoured plastic lenses have their own anti-fog coating, but such “factory coatings” are notoriously fragile and soon lose their effectiveness. I bought the 2 oz. Stream-2-Sea to help assure that the OMID goggles could remain fog-free as long as possible. Out of the box, I first gently washed the new OMID goggles with a minimal amount of Johnson’s Baby Shampoo (BS), --not their newer “Head to Toe” formulation. They are similar, but not the same. SEE MY PHOTO’s showing the slight differences in their published ingredients. A Word of Caution: When washing plastic-lens swim goggles, you always need to be as GENTLE as possible. A little particle of sand being rubbed across the lenses can scratch the heck out of them, permanently. OK,,, I rinsed my new pair in room-temperature tap water, then applied the smallest amount of BS, and used the slightest finger pressure possible, then rinsed them in the tap water. My tap water leaves ‘spots’ when it dries, so I do a final rinse with some distilled water for a spot-free finish. Once dry, I applied one drop of the Stream-2-Sea anti-fog gel to each inner lens and used my wet finger to GENTLY spread a thin, uniform coating. I then added a tiny amount of distilled water to each lens “cup” and swirled it a few seconds before pouring off the water. I allowed them to air-dry to a clear, streak-free coating, and then put them into my ‘swim bag’, ready for use. I swam 90 minutes in the 83F lake water that next morning. The goggles never leaked, and they never fogged up. The polarized, fog-free view was so much better than before. I finished my swim and I immediately put them into the OMID carry bag that came with the goggles, being careful to not touch the lenses (there’s no clean rinse water available at the lake). Once home, I washed my hands to remove any possible sand particles (which can scratch the plastic lenses) before rinsing the goggles thoroughly under tap water. Then I dabbed a tiny amount of BS onto each wet lens and used a modified* Q-tip to gently clean their fragile inner surfaces. (* I get a Q-tip and pull the cotton to stretch it longer, then use the stretched portion to gently go over the lens surface.) I then rinse the goggles with tap water, followed by a distilled water rinse. Before they dry, I use the Q-tip (or a tiny, soft-bristle artist brush) to paint a uniform coating of the Stream-2-Sea anti-fog gel onto the inner lenses. To smooth out this coating, I add some drops of distilled water to make a little ‘puddle’ in each lens cup. After a few seconds of swirling, I pour off the water and check to see that there are no remaining streaks of the Stream-2-Sea. If there are some streaks, I just rinse them with a few more drops of the distilled water and check them again. Once they are totally streak-free, I ‘stand up’ the goggles to let them air dry (similar to what you do with a washed dinner plate). I’ve now used my new OMID goggles 9 times, and they are still in like-new condition. Not a single scratch, and they never, ever fog. Over the past couple weeks, my swims have included few that were two hours long(in sunny, 90 degree Heat Wave conditions). My old “Vanquisher” goggles would begin fogging up in just a fraction of that time. The Stream-2-Sea anti-fog gel, in combination with the ‘factory’ anti-fog coating on the OMID goggles, has worked perfectly for me. And, the ‘soft-cushion’ design of the OMID googles has completely eliminated the eye-socket discomfort,,, and no more “raccoon eyes”. My goggle-washing procedure may seem very lengthy and tedious when you sit there and read about it, but it soon becomes routine, taking only 5 minutes. I can now enjoy swimming comfortably for HOURS with absolutely no fogging, and it’s keeping my $26 swim goggles looking brand new. The OMID comfort goggles -and- the STREAM2SEA anti-fog gel are an effective combination for any ‘distance swimmer’. ... show more
Reviewed in the United States on July 24, 2022 by E J E J

  • Saved the day!
Style: 2 Fl Oz
I was so disappointed to snorkel in Turks and Caicos and not be able to see much, because of my fogged up mask. Fortunately that problem went away once I used this de-fogger. Just be careful to not to use too much; boy did my eyes sting the first time. Once I used only a small amount, there was no problem. ... show more
Reviewed in the United States on August 20, 2023 by Stacey

  • It works!
Style: 2 Fl Oz
We swim in a pond for about 45 minutes at a time and our goggles stay completely clear! Amazing! It just takes a drop in each eye piece so even though its a bit pricey a bottle lasts a long time. We have Aqua Sphere Kayenne Swim Goggles. I now do no goggle adjusting for the whole swim. Makes swimming much more fun, to have comfortable clear goggles throughout! ... show more
Reviewed in the United States on August 14, 2023 by Karen

  • Works but a little thick
Style: 2 Fl Oz
Maybe it's just me but I like really thin defogger that is easy to wash off with one dip in the water. This one is a little thicker than I'm use to and takes about 3 dips in the water to get it off. All-in-all, it works as advertised.
Reviewed in the United States on August 17, 2023 by 🤓

  • Prevents fog
Style: 2 Fl Oz
It prevented fog on my goggles for a half hour doing laps. Sometimes at the start I had to smooth out the layer of defogger but no big deal.
Reviewed in the United States on August 17, 2023 by Hidding

  • Surprising Great
Style: 2 Fl Oz
I was looking for a inexpensive but environmentally friendly anti fog and this stuff worked great. Our instructor sprayed some stuff in our mask but it wouldn’t last and had to reapply. This tuff was once and good for the whole dive. Even when we did mask flooding exercise.
Reviewed in the United States on August 9, 2023 by 561Dad

  • This really works
Style: 2 Fl Oz
We used some of this product on our dive boat. I wasn't sure if it would work better than what i was currently using. This helped to keep my mask fog free for the entire dive. Only caveat is that you have re apply prior to each dive.
Reviewed in the United States on August 7, 2023 by Momier

  • Feels like the bottle of stuff I found in my parents nightstand
Style: 2 Fl Oz
Works well. My kids left it open and it poured out though so I didn’t get to use it for long. I’d buy again.
Reviewed in the United States on August 11, 2023 by Sw77

Can't find a product?

Find it on Amazon first, then paste the link below.