These particle use additive light meaning they can only been seen in darker rooms. They work the same in IMVU classic, desktop or phone! Put them in your rooms or wear knowing ALL users can see them! Developers EASY derive You can edit in classic client or studio! If you do edit in studio then you must name your particle the same as mine and the edit room is to bright to show them, so first.. change room. All images are .png files and have a black background with your particle shape on top. Open in Studio, click on the materials tab... take note of the particle name I've used, call yours exactly the same and add it, there's no need in Classic, it will rename it for you. If you want more instructions and tutorials, FREE particle textures, lots of shines and normal maps for other products then head to my website and bookmark I'm updating all the time https://textures123.com/particles/