[smithy]

Can you use a background (picure of glitter for example in google search) for business promos for instagram/fb or is that considered copywright? Thanks

[germainebull]

Your question is hazy. Perhaps you could share on a specific image you wish to use in your background.

[mrki444]

Check with owner or at least put link of source on image.

[BJHB]

Try to search images with creative common licence. There are many images available you can use for your own purpose, for commercial purpose too. Try a google search including the word creative common.
e.g. "glitter picture creative commons"