4 Pack A19 LED Black Light Bulbs,9W (100W Equivalent) E26 Base Dimmable Black Lights, UVA Level 385-400NM, Halloween Light Bulbs，Glow in The Dark，Fluorescent Poster, Body Paint,Neon Glow Party

These were perfect for our Halloween party. Great light level great quality.

Seems to be working o.k. The plants aren't complaining!!!

Really great bulbs, works well as stated and has excellent blacklight effects on white or light materials. I noticed that if you have it on in a room during the day where outside light or other regular lights are on the blacklight effect is not as strong, best in a completely dark room with no other light source. Also the bulbs don't get very hot with which I was pleasantly surprised.

Overall these are good, with a couple points to note: The overall heat output is pretty low. I let one of these run all night in a small lamp, and the top of the bulb stays pretty cool but the base (the area from the black section to the bottom metal part) gets fairly warm to the touch, but not excessively so. These will make some neon items glow (depends on the color, and how close the bulb is to the items) if the bulb is pointing straight up in a typical lamp. Unless you are aiming the top of the bulb directly at the neon items, you won't see the full effect. If you are looking for a "true" UV Black Light that only lights the neon items and not the rest of the room, get something else. However, if you want a really bright BLUE ambient light, these are the definitely ones to get. One bulb can easily light up an averaged sized room fairly well, especially if placed in a room corner with bare walls. In these cases, you might want to put it in a lamp with a dark shade. If used outside, the effect might not be as dramatic, but I don't have the means to try it. Regardless, for my purposes I am using these indoors only and I've taken off one star because of the excessive brightness.

The kids absolutely love these purple lights. They put off what you would consider a black light. Very soft and easy to use as a night light.

Perfect for glow in the dark parties

Not super bright, so has to be fairly close to illuminate with UV. Quality is not great with one out of eight having a tilted LED platform. The clear shell is thin and flexible, not a hard plastic.

the bulbs work well for parties and halloween decorations they last well

It burned my favorite lampshade