Slip stitch (abbreviated sl st) is a one of the basic crochet stitches.
Slip stitches are usually used to finish the edges of completed work, or they may be used to join stitches.
At all crochet schemes slip stitch symbol would appear as: circle or oval.
At the scheme below you can see a number of slip stitches crocheted together.
Slip stitch instructions
Insert hook in the last stitch of the previous row under top two loops.
Yarn over and draw the yarn through all loops on the hook.
Insert your hook under top two loops of the following stitch of the previous row. Again, draw the yarn through all loops on the hook.
Repeat the process inserting hook in the following stitches of the previous row under top two loops.
Watch a slip stitch video tutorial
If the final row is too tight, the crocheted fabric may crook and pucker.
In order to avoid the possible deformations the last row has to be loose.
Crocheted projects can be decorated by colored chains crocheted on top of them.
Save this step by step tutorial as a reminder