Helps some .... others, doesn't.
Jury's still out.
Supposed to be a money back guarantee, but the company, atho
somewhat reputable, markets like snake-oil sales.
I've had trouble with them in the past, but that was 5 years ago
& they're still in business.
The add-ons for the other pricey stuff they sell, is a waste of money.
Household products work just as well.