Please tell me where to find alum powder for a crystal candle holder?

I purchase alum powder in my grocery store where spices and pickling products are sold. It can be purchased online as well at www.amazon.com. Type in your search box "alum powder for sale'' on Google and it will give you links to places that sell the alum.

How much do you need? Amazon sells it in bulk, some stores sell in the spice aisle, but it can be tricky to get, not always in stock.

https://www.amazon.com/s/?ie=UTF8&keywords=potassium+alum+powder&tag=googhydr-20&index=aps&hvadid=174246787678&hvpos=1t1&hvnetw=g&hvrand=6188820334726412141&hvpone=&hvptwo=&hvqmt=b&hvdev=t&hvdvcmdl=&hvlocint=&hvlocphy=9031180&hvtargid=kwd-28560436194&ref=pd_sl_2w4926lhgh_b

Check beauty supply stores. It's used just in case your inexperienced manicurist nicks a cuticle.

Some pharmacies carry it.

I found alum powder at our local Wal-Mart in the spice aisle!

I saw it just yesterday at the grocery store with the spices.