Like slippery elm, it contains a high mucilage content. (mindbodygreen.com)
Flax, like psyllium, has a high soluble and insoluble fiber content, and the seeds are commonly used as a treatment for constipation, as their fiber and mucilage content help to improve stool motility. (herbazest.com)
Finally, the plant has a high mucilage content, which makes it a great skin moisturizer. (annmariegianni.com)