
Embroidery threads (or floss) are such eye-candies to me. Whenever I buy new ones, I’m into the habit of pre-washing them and obsessively wind them onto my plastic floss bobbins. Seeing a box of neatly wounded bobbins in rainbow color assortment is so satisfying to my soul.
Most stitching books will strongly advise us to pre-wash the FABRIC before embroidering on it. Otherwise, if the fabric shrunk or color bled through, then the masterpiece will be ruined after the first wash, and all efforts will go to waste. Strangely, the emphasis to prepare the floss likewise is not as strong, or not even mentioned at all. Hence, many stitchers will not bother to pre-wash them despite of the same possible tragic ending. I guess many trusted the leading brands of embroidery threads and their claims of colorfastness.
Well, even from a self-proclaimed OCD’s point of view, pre-washing floss is definitely NOT for everyone. Especially NOT for the hasty and fluttering ones. I don’t want you go tearing your hair out when you end up with mesh of floss ball. However, if we share the same motto in life with “Always to be safe than sorry”, then hear me out.
Out of curiosity, I went to wash the first lots of colors I bought (Cosmo, DMC & Olympus threads). The lot included dark-colored embroidery threads (notorious for bleeding) as well as light colored ones. The result, 6 out of 16 had mild degree of color run. 
And what bother me most was that some floss, which include the pastel colored threads, unexpectedly dropped significant amount of tiny lints that “colored” the water. I had to rinse them several time until the water returned clear.
Okay, here is my fraidy cat’s five cents worth on this. Especially for the hasty and fluttering ones who actually read this far, pre-washing only the strong colored floss is the least you can do. I do think that it is a necessary step to safeguard your embroidery. Since the experiment, I decided that a little diligence will go a long way. So, I proceed to wash every colors I’d bought (except white). It gives me a sense of peace as well as comfort to know that now NONE of my threads will ruin my needlework. Furthermore, even with the washing, the colors remain pretty and bright when the floss dry up.
Finally, I thought I’ll end this post by sharing the methods I used to pre-wash the threads with almost no entanglement. There is no shortcut or special trick to it, and it does require vast amount of patience. Just remember, at the end of the day, when you look at your completed embroidery, it will worth it all.

Threading New Ground
Sewing Kit Pouch
My husband uses bandanas all the time as handkerchiefs and for our anniversary I planned on making some for him.
Those for sure will need to be washed, so I’m glad to know there is a way to pretreat the thread… unless I’m super lazy and make the hankies with black fabric…
Hi Tricia, thanks for sharing. I actually like your alternative idea of using black fabric. I thinks its cool and the embroidery will definitely stand out. Then again, I love everything black LOL. Have a blessed day, and may it be filled with endless creavity! ^_^b
Thank you for the info you gave. I was utterly mystified as to how to even begin!!! Do you you think it necessary to rinse cotton floss threads for a crewel picture???
Joan
Joan, here are my thoughts:
If you’re never going to wash the crewel picture, then I guess it is not necessary to rinse the threads. If you do wash it, then do pre-wash the fabric as well as any of your dark/strong colored floss. Hope this help. Have fun creating! ^_^Y
Thanks for posting. This is exactly what I was looking for.
U are most welcome! Glad you find my sharing useful. ^_^b
I have always used embroidery threads on fabrics that did not need to be washed. Wall hangings and such. But I am considering embroidering a picture on a blouse and had always wondered if I should wash my threads first to so they will not bleed in the wash. What about shrinking? Are embroidery threads preshrunk?
Thank you for this article. It helped a lot.
Glad you drop by. I’m no expert here especially in the area of embroidery craft, but this is what I gathered from most read. If the material (thread or fabric) is made of natural fibers (i.e. cotton or silk etc), chances are that they will shrink in most wash, in various degree.
I will definitely pre-wash the blouse if I’m going to embroider on it. As for the floss, like I mentioned in the post, pre-washing any of the strong colored floss is the least you can do. Hope this help. Stay creative! ^_^Y
Your site came up on a search… i made /stitched a little picture for my dad of the 2 of us in a western horse carriage and his red shirt bled! i had to think fast and stitched a half stitch heart right next to his head which covered it pretty nicely and looked like it ws intentional… but at first i freaked!
you’d think i’d know better as ive been stitching since 1970… but have had red bleed on me only once before and it left a water color look to a poinsetta so it was passable. but i like to have the control of knowing it will be alright.
so… i wont always wash first — it depends on importance of gift but after reading your news here wow, THANK YOU SO MUCH
Hi Tea. Thank goodness you were able to redeem your masterpiece. Quick thinking indeed! (When I read “his red shirt bled”, my heart missed a beat! LOL). Thanks for sharing. ^_^b