This madder root powder came fully sealed which I appreciate as I've ordered powdered dyes that have spilled in transit! This was my first time using madder in particular for dyeing, I used half the bag (50g) and my colors were on the pale side. I believe the lime scale of my water wasn't quite hard enough but I used iron to shift the color towards the end and the results were so interesting! Here is a picture of my swatches on cotton using alum mordant! So much fun!