Anchor Marlitt
This is a beautiful, 4-strandable thread, made from Viscose/Rayon in order to achieve such a high sheen.
It is similar to DMC Satin, but each of the strands is slightly thicker, hence only 4-ply instead of 6-ply.
Sometimes it can be difficult to control - simply dampen with a make-up sponge along the length to take the kinks out of it.
