Yes you can. I've done mine in delicate. Good luck. Arlene

I believe there can be some colour run from the stronger colours. Irridescent seems to be ok.

I wash it normally and iron on the back and have had no problems

Beware, if you use the colored wrapping type "mylar", the color will run. I learned the hard way. But it holds up fine in the wash and dryer.

I stitched out three poodles with Mylar backing on some cotton fabric. I put the stitch-out test on a pile of other stitch-outs. A mouse got into the house and ran over my fabric (Gasp!@!!)....
I tossed the lot into the washing machine, normal wash with 40F water, as it was a matter of survive or be tossed out and burnt.
To my surprise all the stitch-outs survived perfectly. I ironed all the fabric on the back, including the Mylar designs, and, again, to my surprise the Mylar survived good as new.

I bought my Mylar from ... www.heirloomsbysharon.com

Well, I could have just said Yes, couldn't I.
AlmaG.

it can be washed if you use the clear Mylar, not the coloured ones. hugs Gerry

There are different types if mylar so it is best to make a sample and wash, dry, and iron test. Noticed some are thin and others thick.