Alcohol-free · Plant-based · Just 2 ingredients
Plant-Based Scuba Mask Defog That Actually Keeps You Clear
Two ingredients: purified water and a plant-based cleanser made from coconut and sugar. No alcohol, no spit, no baby shampoo. Made by a PADI instructor with 5,000+ dives who got tired of all three.
Instructor 2-Pack · Two 4 oz spray bottles
$19.95Free shipping
- One bottle for the boat, one for your save-a-dive kit
- About 100 dives per bottle (roughly 10¢ a dive)
- Free: all 3 of my dive eBooks
✓ 30-day money-back ✓ Free shipping ✓ Secure checkout
✓ Just 2 ingredients ✓ No alcohol ✓ Biodegradable ✓ Free shipping ✓ 30-day guarantee
The pre-dive ritual, rethought
Every old defog trick has a catch
You’ve tried them all. Here’s how they stack up.
| Method | Clear vision | Your eyes | The reef |
|---|---|---|---|
| Spit | Hit or miss | Bacteria on your lens | Fine |
| Baby shampoo | Streaks, rinses away | Stings when it seeps | Detergents, fragrance & preservatives in the water |
| Alcohol-based defog | Works | Can sting and irritate | Alcohol in the water |
| Defrogger | Clear, dive after dive | No alcohol, no sulfates, no fragrance | Water + one plant-based cleanser, biodegradable |
Full ingredient list
Two ingredients. That’s the whole bottle.
Most “eco” defogs list a handful of ingredients you can’t pronounce. Ours fits on one line.
- Gentle on your eyesNo alcohol, sulfates or fragrance to sting if a drop gets in.
- Nothing harsh left behindA biodegradable plant-based cleanser, with no alcohol, sulfates or petroleum-based surfactants.
- Safe for your maskWorks on tempered glass lenses and won’t harm silicone skirts.
Ingredients
- Purified water
- Plant-based cleanser (made from coconut and sugar)
Nothing else. No alcohol. no sulfates or petroleum-based surfactants. No fragrance. No dyes.
How to use
Clear in under a minute
Spray
2–3 pumps on the inside of a dry lens.
Wait
Let it sit 30–60 seconds.
Dip & go
Dip the mask briefly in water, shake gently, and don’t touch the lens.
New mask? Scrub off the factory film first, or any defog will struggle. Between dives, rinse and respray.
40+years diving
5,000+logged dives
MSDTPADI Master Scuba Diver Trainer & SSI Master Instructor
Why I made it
I got tired of choosing between my eyes and the reef
I live to dive. But over thousands of dives the same three things kept ruining the view: fog, spit, and baby shampoo that burned my eyes. Every time I rinsed suds off my mask I wondered what they were doing to the coral below me.
So I worked with a chemist and a crew of fellow instructors and kept testing until we had something that worked with just two ingredients: water and one plant-based cleanser. That’s Defrogger. It’s what I use, and what I hand my students.
Scott Fontecchio — Founder, author of Mastering Buoyancy
Free guides
Mask defog guides from a dive instructor
Free with your order
Plus all 3 of my dive eBooks
Mastering Buoyancy, Improving Air Consumption, and Reef Safe Diving, delivered instantly after checkout.
Instructor 2-Pack · Two 4 oz bottles + 3 eBooks
$19.95Free shipping
- 2 × 4 oz Defrogger spray (about 200 dives total)
- 3 dive eBooks by Scott Fontecchio
- Free shipping
✓ 30-day money-back ✓ Secure checkout
30-day guarantee. Try it on your next dives. If you don’t love the clarity, send it back within 30 days for a full refund. No questions asked.
Questions
Mask defog FAQ
What’s in Defrogger?
Two ingredients: purified water and a plant-based cleanser made from coconut and sugar. No alcohol, no sulfates or petroleum-based surfactants, no fragrance, and no dyes.
Is Defrogger safe for the reef?
We don’t use the term “reef safe” because it has no legal definition. Here’s what’s actually in the bottle: purified water and one biodegradable, plant-based cleanser made from coconut and sugar. No alcohol, sulfates, fragrance or dyes.
Does it sting your eyes?
It contains no alcohol and no sulfates or petroleum-based surfactants, the usual causes of stinging from defog and baby shampoo. As with anything, avoid spraying directly into your eyes.
How do I apply it?
Spray 2–3 pumps on the inside of a dry lens, wait 30–60 seconds, dip the mask briefly in water and shake gently. Don’t wipe or touch the lens afterward. Between dives, rinse and respray.
My mask is brand new. Will it work?
New masks have a factory film on the glass that causes fog no matter what you use. Scrub it off first with a mask cleaner or non-gel toothpaste, rinse well, then apply Defrogger.
How long does a bottle last?
A 4 oz bottle lasts about 100 dives, so the 2-pack covers roughly 200.
Does it work for snorkeling, freediving, and swim goggles?
Yes. It works on any mask or goggle lens: scuba, snorkel, freediving, and swim goggles.
Is shipping really free?
Yes. Shipping is free on the Instructor 2-Pack, and your 3 eBooks arrive by email right after checkout.
What if it doesn’t work for me?
You’re covered by a 30-day money-back guarantee. If you don’t love it, send it back for a full refund.