Natural Dye Experiment - Onion Skins
On Tuesday 3rd March 2015, following some reading about the natural dyeing process, I attempted to have fabric samples dyed in onion skins.
The skins used for the dying process experiment are from one yellow onion and one red onion. They were used separately, because I wanted to see what colour differences they had in comparison.
The two onions skins were boiled for one hour in two separate pots. During this time, I noticed the change in colour of the water (dark brown for red onion skin, and light brown for yellow onion skins), showing the extraction of the colour from the onion skins.
However, as the electric hot plate set on boil tends to make the water quickly evaporate, I topped both pots with warm water before the onion skin dye liquid is lost.
After an hour, with the pots half-full, I added cold water to each pot, then placed wet fabric samples (they were submerged in cold water for a hour), before putting the hot plate setting to simmer. Afterwards, this became a test of patience, as I had to wait until the fabrics are dyed with the desired colours. During this, I gently stirred the pot, so as to not get the fabrics to stick in the pot and for the onion skins to get stuck onto the samples.
After finally getting the desired colour, the fabric samples are rinsed in cold water before being placed on a clothes rack to dry. The reason for this is because the spinner and tumble dryer are used by other students at the time.
To help me identify which dyed fabric was which, I pinned a piece of paper with the dye (red onion, yellow onion) on each area where the fabric samples were placed.
The process of dying with onion skins was a good experience, because it gave me a better understanding of what to expect when trying out natural dyes. The process I did had no mordant; from the books I read on dyeing with onion skins, there were some that required alum mordant or none at all, so if I was to do this again, I could try with a alum mordant to see some differences.
Unlike synthetic dyes, natural dyes require a great amount of patience, so you shouldn't expect any quick results. Slow and steady is key for the natural dye to work.