My major problem is the outrageous dents in my cheekbone area caused by the cannulas. As a side sleeper the dents have been a VERY major problem for me as they can last all day and into the evening only to be repeated again. These less than 'pretty' little 'divots' were becoming permanent! So, these little foam covers have really solved the problem. I started using a pair on my cheeks and they seem to spread the pressure of the cannula on the skin. The 'Ear-mates' brand is very good for this purpose as well as being a wee bit more flexible. You might wish to try both and see which works best for you front and/or back.
As many reviews have mentioned, these don't stay on especially well; UNLESS you tape them on using silk tape which keeps them right where you put them. I've tried other tapes but they tend to get stuck to your skin more quickly as well as tending to be scratchy. Paper tape wasn't a bad option, but you must keep it very flat when wrapping so it doesn't create bumps.
So, I've been using a pair about 3/4" above the nose aspect of the cannula, then tape them on carefully with silk tape and viola dents are 75% less obvious and a LOT less deep. Using narrow little strips of tape, spiral them up the foam until completely covered, using very little tape to connect them to the cannula. (the less tape the better as too much can create unwanted 'bumps'. When using them on the ears, I use 3 little strips. One top and bottom to attach them to the cannula and another around the center to keep the foam closed around it. It also works to tape them completely, but it's not quite as soft as the foam. So, those of you who have tried these and hated them, tape will solve whatever problems you may have had. I think they are WONDERFUL!!!
Reviewed by: Patrise M, Santa Barbara