Can I use these overnight ?
1979774
I would not suggest it, they are meant to be applied for 5 minutes for convenience.
374729
Yes, I've worn them for sleeping for a few years now due to noisy neighbors. They are comfortable with multi-hour use; sometimes a new pair can seem a bit large when first worn (hurting my ear a bit, but I have small ears). If this happens, I just pull them out a bit and all is well. And they do stay in all night if you insert them according to the directions on the package (pull ear up and back, roll the plug tightly and insert). I don't know what I'd do without these, they are a lifesaver as far as my sleep!
1548645
They will last all night and probably 2 to 3 nights. They are powered by three 1.5 volt lithium batteries and can get pricey. However, they are nice and soothing. They contiuously change colors
1464970
You can, but they will be quite uncomfortable if you move or shift while sleeping.
1799178
Yes it is OK to use overnight as indicated there is a formula without the SPF but no need to have both.
1923476
The longer the better. When you first start to use them, you must wear them all night for good results. Once you've used them awhile, using them for 3 hours before going out in the evening will help a lot. But I would suggest using them at least one month before expecting results from 3 hours use.
1371681
Do not drain them. Charge overnight BEFORE you use them. I know in the past to drain then charge, but not with these.
356149
Depends on the strength of the charging supply. A couple hours. I do them overnight.
1458619
Yes and no. There is a switch to turn them on, but they won't come on in the day time, only at night. But you can turn them off so they don't come on at night.
44222
Yes, they do last several hours, especially if you have a small insulated bag, or wrap in something insulating like paper towels in a small case. I use a large eye glasses case, or a small make-up container. If the weather is not going to be over 50 degrees, you should be able to get longer than that. You can also request a room refrigerator in your hotel room for a nominal cost.
2029671
I used them overnight, but not two nights in a row. The results were noticeable right away.
298939
I don't think I would worry about leaving it on overnight. We had it running for 8 hours at a time. The wire that burned out did not cause any problems other than making the unit inoperable.
1227312
No, that is the only way I have used them. The batteries are fine after 1 month, and using them 4-5 nights a week for 8 hours or more.
1499875
You probably could but they won't be as soft and juicy straight out of the fridge. You'll need to leave them out for an hour or so, until they reach room temp.
389759
packs won't go bad. A lot of doctors offices require them to be turned off at night. However it will take over an hour to get the packs heated properly
352463
They will last through the night but only one (or maybe two) nights. The battery would quickly be extinguished and you would probably spend a lot on replacing the battery every other night. I also use a nightlight but I use a small light that plugs into the wall with a nightlight bulb in it. I also have one of these http://www.amazon.com/GE-Flower-Design-Incandescent-51386/dp/B002DNG9A2/ref=sr_1_18?ie=UTF8&qid=1410570644&sr=8-18&keywords=night+light which works really well. Hope that helps! These Mushroom lights are still fun and are really good for a few hours a night!
428941
I don't keep them on longer than 30 minutes. The packaging could improve the directions!