Marshmallow root is a root. You have to steep the pieces in warm water. I know I posted my recipe in the past. Here's what I do.

There are two fairly current threads about FSG recipes. I posted mine here.

I just bought a product called Sucragel AOF. According to an article by Curl Chemist last month, it's the new "it" product in skin and hair. I added 1/2 t to four oz. My hair just LOVES it.
3a (Corkicelli), highlighted, fine, low porosity

HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic; Botanical Spirits Jellies, CJ Repair Me, Aloe Fix