How long will they glow? And can they be used in the bath?
586192
Not too long, dome last longer. You can use them in bathtub, but didn't try to see them glow in water..they are very cute and kids liked them
586193
They don't glow very long, but you can charge them in light and they will glow a bit. Some colors work better than others and yes, I think they are safe in bath. They are a hard plastic.
683127
They last a normal length of time. Do not recall how many hours. More importantly is that the light is not very strong. Depends what you need them for but they do not illuminate very much.
1175995
I have no idea. I would think they would sink, but then how would it effect the glow?
770005
Are you asking whether they fade with age, or whether you can put them on a dimmer circuit? They are supposed to last a long time: "50,000 hours". That's almost six years, full time. If you mean on a dimmer circuit, I don't know, and can't easily try. But they may work well. They don't cost much, so give them a try.
1748506
This is not professional quality bath, so I suspect it won't last long if you leave it on for prolonged periods of time. Otherwise salons would be buying this stuff instead off the ones that cost hundreds of dollars... The max I've had it on was 4 hours.
1265456
They're made of plastic but we've never used them in the bath. Just in the play area for stacking and building. Not sure it they were designed as a bath toy.
584982
Who knows what you mean by that question, but Phosphorescent Pigment needs to be charged up by a lightsource before it will begin to glow. So if you opened the box and expect them to glow, they won't. The glow will also be brighter the longer the balls are exposed to light. The glow begins to fade within minutes and slowly loses it's intensity. If you want bright glow in the dark balls during a kids party then get a UV (black) light bulb and keep it on during the party and turn the other lights off. They will glow brightly for a long time.
428001
It depends how long/bright light is directly on them. By sunlight it's only a dim 10 minutes or so, but with direct ceiling light for an hour, you'll get at least 20 minutes.
2230831
These are really cool!....but dont glow for very long at all! Sad! Would be nice if they lasted longer for sure
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
1699242
The fact they are LED they will not draw as much electricity as a luminescent. With fresh batteries I have had the lights on for 4 hours. The next time I used them for two hours with no dimness of the lights.
2003485
I would think it would work for a low level glow... not the most durable, but if you let sit in place should be just fine.
62453
Yes. They work just like normal blacklights. Depending on the color of your pipes/fluid yes, the lights could make them glow.
2174029
It says it can be used outside, that is what I bought it for. Spray painted little glass candle holders. They set in the sun throughout the day but NO glow at night. It did not work at all.
2258326
Yes. Definitely some of them glow. I received them in the evening. I put them in one of my bedroom draw without turning on the light and there I noticed some glow though not sure which colors.
2230830
Mine glow all night. The length of time they glow depends on how long you have them in the light. If I leave my bedroom light on for a couple hours, they usually are still glowing by morning. They're not going strong like they were when I went to bed but they are glow in the dark stars that need light to build up their glowing power.
734352
Yes, they should glow. I've used similar ones before, and all the glow-in-the-dark stuff tends to glow with a blacklight, which is nice, so they'll stay lit as long as you like. :)