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Invisible Decrease Crochet Tutorial {Inv Dec}

Learn how to crochet an invisible decrease for amigurumi patterns. This tutorial demonstrates how to crochet the inv dec while crocheting in the round.

You can use this technique to decrease two single crochet stitches into one. It’s an easy way for creating round crochet pieces like balls, heads for dolls, etc.

In the tutorial, I show you how to use the invisible decrease to create decreases you can barely see. You can decrease with a s2tog, but the inv dec is so much cleaner!

Crochet ball in tan yarn with hook.
Invisible decreases are hard to see!

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Yarn

I’m crocheting Red Heart With Love in tan for this tutorial.

Red Heart With Love is a #4 medium worsted weight yarn. You can use any weight yarn and colors your pattern requires.

Since the inv dec is often useful in amigurumi patterns, I’m demonstrating with one here. However, you can use this decrease when working flat or in the round.

Stitch

The invisible decrease is a way to decrease the single crochet stitch.

When crocheting in the round, you always see the right side of your stitches. This is popular for amigurumi crochet since it gives those pieces such a uniform look.

But, of course, we have to decrease to shape those round pieces, like the head.

You can use a regular single crochet two together {sc2tog} but it is a bit bulky. That’s where the inv dec comes in.

It’s almost too good of decrease-it can be hard to find once it’s done!

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Inv dec shown on ball crochet pattern.

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Crochet Patterns With The Invisible Decrease

The Katerina Cat Lovey is a simple amigurumi pattern that uses this decrease in shaping the head.

It’s not just for amigurumi, but that is the most popular use. I use the invisible decrease in the Lontano Beanie.

This bottom up beanie pattern fits snugly and therefore uses decreases really early. So I use the inv dec to keep those decreases looking good.


Round crochet ball with hook.
The inv dec looks almost the same.

It’s hard to spot among all the single crochet stitches.

More Crochet Tutorials

You might also like the tutorial on how to change colors throughout a row.

The Back Post Double Crochet is an amazing stitch for adding texture to your patterns.

The magic circle is one of those techniques {like this one} that really makes your crochet in the round look great.

Materials

  • Any weight yarn and compatible crochet hook.
  • In this tutorial I’m using #4 medium worsted weight yarn and a 3.25mm US size D crochet hook.

Stitches/Abbreviations (US Terms)

ch(s)-chain(s)

inv dec-invisible decrease

rep-repeat

sc-single crochet

sk-skip the indicated stitch

st(s)-stitch(es)

yo-yarn over

Written Instructions

Insert your hook under the front loop only of the first stitch. Bring your hook to the front and down, below the next stitch. Insert your hook up, under the front loop only of this stitch (3 loops on your hook). Yarn over and pull through 2 loops on your hook (2 loops left on hook). Yarn over and pull through the last 2 loops on your hook.

Tutorial

Steps
1
For this tutorial I’m using worsted weight yarn + my Clover Amour 3.25mm hook.
2
I’m ready to decrease and with amigurumi I want it to be more invisible than a sc2tog.
3
To decrease I need to join two sc stitches in one.
4
Inv Dec: Insert your hook under the front loop only of the first stitch.
5
Bring your hook to the front and down, below the next stitch.
6
Insert your hook up, under the front loop only of this stitch (3 loops on your hook).
7
Yarn over and pull through 2 loops on your hook (2 loops left on hook).
8
Yarn over and pull through the last 2 loops on your hook.
9
Two stitches are joined into one that look almost the same as a sc.
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Copyright © 2021 ChristaCoDesign/Crystal Marin. This pattern is for personal use only. Please feel free to sell and/or gift items you personally make from this pattern. You may not distribute this pattern and/or photos in any form, including screenshots, email, photocopying, or posting photos of this pattern online, or elsewhere. Please link to this post https://christacodesign.com/2021/03/16/invisible-decrease-crochet-tutorial-inv-dec/ if you would like to share.

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