The bottle is expensive but lasts months swimming 3 times a week and it works each and every time I use it.
I have used your mask defog since the beginning of the first lockdown when I started daily sea swimming - wonderfully clear goggles for every swim. I have passed the good news on to my friends who have become regular users. Jennifer
Great product, and most importantly, it’s good for the sea. I use this on swimming goggles. Even though it’s for tempered glass masks. Works brilliantly.
I love this product..I bought it last year and it has transformed my swims...there is no more stopping to wipe the insides of the goggles.. Just follow the instructions and it works perfectly..