The Invisible Decrease (DEC): The Secret to Neat Amigurumi

The amigurumi invisible decrease works through the front loops only of two consecutive stitches, closing the fabric without leaving a visible gap — producing a smooth, professional surface that sc2tog cannot match. This article teaches you the exact front-loop mechanics, how to read decrease rounds in patterns, and when to install safety eyes and stuffing before the final closing rounds. By the end, you will close every amigurumi piece cleanly and confidently.

I spent months wondering why my finished amigurumi always had a row of small holes running around the lower half. The pieces were well-shaped, correctly stuffed, neatly sewn — but those gaps ruined them. Every one of those holes was a sc2tog decrease. The day I switched to the invisible decrease, that problem disappeared completely and has never come back.

What Is the Invisible Decrease and Why It Matters

The invisible decrease works through the front loops only of two consecutive stitches simultaneously, closing the opening without a visible gap — unlike sc2tog, which pulls two full stitches together and leaves a hole at every decrease point.

The Problem With the Standard Decrease (sc2tog)

The sc2tog — single crochet two together — is the traditional decrease method taught in most general crochet courses. To work it, you insert the hook into the next stitch, pull up a loop, insert the hook into the following stitch, pull up another loop, and then yarn over and pull through all three loops. The result reduces the stitch count by one.

The problem is structural. By inserting through both loops of two stitches, sc2tog pulls the fabric from two angles simultaneously, creating a visible gap at the insertion point. On flat fabric, that gap is minor and easily pressed flat. On a stuffed three-dimensional amigurumi form, the internal pressure of the polyfill pushes outward through every opening in the fabric — and every sc2tog becomes a small hole where the stuffing is visible. Across a full decrease section, this produces a ring of gaps around the lower half of the piece.

How the Invisible Decrease Eliminates the Gap

The invisible decrease sidesteps the gap problem by working through the front loops only of two consecutive stitches rather than through the full stitch structure. The front loop is the loop closest to you on top of each stitch. By drawing both front loops onto the hook simultaneously before completing the stitch, the decrease closes from the front of the fabric rather than pulling from both sides. The back loops remain in place, and the visual result on the right side of the fabric is a smooth, closed surface with no visible hole.

The stitch count reduction is identical to sc2tog — two stitches become one. But the surface it leaves behind is categorically different. The invisible decrease lives up to its name: worked correctly, it blends into the surrounding single crochets and is nearly impossible to locate by eye once the piece is finished.

Why Every AmiLoops Pattern Uses Invisible Decrease Exclusively

AmiLoops does not use sc2tog in any pattern for any amigurumi piece. The visible gap it produces is not a stylistic trade-off — it is a quality failure, and there is no circumstance in standard amigurumi construction where it is preferable to the invisible decrease. Every pattern on this site writes DEC to mean the invisible decrease, worked front loops only, every time.

If you are following patterns from other designers who specify sc2tog, you can substitute the invisible decrease directly — same stitch position, same count result, better surface quality. The substitution is always an improvement. For a full overview of where the invisible decrease fits in the complete beginner skill sequence, the complete beginner’s guide to amigurumi maps every technique in order.

How to Work the Invisible Decrease — Step by Step

The invisible decrease is worked by inserting the hook through the front loop only of the next stitch, then through the front loop only of the following stitch, before completing the stitch through all loops on the hook — two front loops consumed, one stitch produced.

Step 1 — Identify and Enter the Front Loop of the First Stitch

Look at the top of the next stitch. You will see two loops sitting horizontally across it — the front loop is the one nearest to you, facing the outside of the amigurumi form. The back loop is behind it, facing the interior. You want only the front loop. Insert your hook under that front loop only — not under both loops, and not under the back loop. The hook should feel like it barely entered the stitch. That is correct.

On a 2.5mm (approx. US C/2) hook with fingering-weight mercerized cotton, the front loop is fine and sits close to the back loop. Slow down on this step until you can reliably separate the two loops visually before inserting. Speed comes after accuracy — not before.

Step 2 — Enter the Front Loop of the Second Stitch Without Completing

Do not yarn over and pull through yet. With the front loop of the first stitch still on your hook, move directly to the next stitch — the stitch immediately after the one you just partially entered. Insert your hook through the front loop only of this second stitch. You now have three loops on your hook: the original working loop, the front loop of stitch one, and the front loop of stitch two.

Keep your hook flat and close to the fabric surface during this step. The hook needs to stay stable through both insertions without catching the back loops or the yarn between the stitches. Emma’s experience shows that beginners who rush this step most often catch the back loop of the second stitch accidentally — which reinstates the gap the invisible decrease is designed to prevent. Take the second insertion as deliberately as the first.

Step 3 — Yarn Over and Complete the Stitch Through All Loops

Yarn over with the working yarn — wrap from back to front — and pull the yarn through both front loops on the hook in one motion. You now have two loops on your hook: the loop you just pulled through and the original working loop. Yarn over once more and pull through both remaining loops. One invisible decrease complete. One stitch has been produced from two stitches.

After completing the decrease, look at the fabric surface from the outside of the piece. You should see a smooth, flat stitch that sits flush with the surrounding single crochets. The back loops of the two consumed stitches are still visible on the interior side — this is correct and is what creates the closed exterior surface.

Emma’s Pro Tip: On mercerized cotton with a 2.5mm hook, the front loop is almost parallel to the back loop — they sit very close together. I use the hook tip to physically nudge the front loop forward before inserting. One second of loop separation prevents the most common invisible decrease error entirely.

How the Invisible Decrease Compares to sc2tog

Both the invisible decrease and sc2tog reduce the stitch count by one, but the invisible decrease leaves a smooth, closed right-side surface while sc2tog leaves a visible hole — a difference that cannot be corrected once the piece is stuffed.

The Mechanical Difference Between the Two Methods

sc2tog works through both loops of two consecutive stitches — full insertion into stitch one, full insertion into stitch two, then completion through all loops. This pulls the stitch tops of both stitches downward and inward from the outside of the fabric, opening a gap between them that is visible on the right side.

The invisible decrease works through only the front loops, leaving the back loops of both stitches anchored in place. The front of the fabric closes without distortion because the back structure has not been displaced. The decrease happens, structurally, behind the surface you see — which is exactly why the surface shows nothing.

What Each Decrease Looks Like in Finished Fabric

After testing dozens of swatches side by side across multiple yarn weights and hook sizes, the visual difference between the two methods is consistent regardless of materials: sc2tog produces a small triangular gap at each decrease point that is clearly visible when the fabric is held flat or stuffed. The invisible decrease produces a stitch that is indistinguishable from a regular single crochet at normal viewing distance.

On stuffed amigurumi, the difference is amplified. Polyfill pushes outward against the fabric from the inside, and any structural opening in the fabric becomes a visible gap from the outside. Invisible decrease points remain closed under stuffing pressure. sc2tog points open further under it.

When sc2tog Is Ever Acceptable

For standard amigurumi construction — any three-dimensional stuffed piece — sc2tog is never the preferred method. The one context where sc2tog causes less visible damage is in flat crochet where the piece will not be stuffed and the fabric will be blocked or pressed after completion. In that context, the gap can be minimized. In amigurumi, it cannot. Use the invisible decrease for every decrease in every amigurumi piece, without exception.

How to Read Decrease Instructions in Amigurumi Patterns

Decrease rounds are written as “DEC” or “inv dec” in amigurumi patterns and follow the same repeating pair structure as increase rounds — reading the full round before beginning prevents misplaced decreases and ensures your stitch count stays accurate throughout the closing sequence.

Common Decrease Notations and What They Mean

You will encounter several ways patterns write a decrease instruction. All of them, in an amigurumi context, mean the invisible decrease:

• DEC — the most common shorthand on AmiLoops and most modern amigurumi patterns. Always means invisible decrease.
• inv dec — explicit shorthand for invisible decrease. Identical action to DEC.
• sc2tog — when this appears in an amigurumi pattern from another designer, substitute the invisible decrease. The stitch position and count result are the same.
• dec — lowercase version. No difference in execution.

When a pattern writes a decrease round as a repeating pair — such as “(sc, DEC) × 6” — it means you alternate one regular single crochet with one invisible decrease, six times around the round. Count 18 stitches consumed, 12 stitches produced.

How Decrease Rounds Mirror the Increase Formula in Reverse

The decrease sequence that closes an amigurumi sphere is the mathematical reverse of the increase sequence that built it. If your sphere opened with rounds of INC × 6, (sc, INC) × 6, (sc, sc, INC) × 6, the closing sequence runs in the opposite direction: (sc, sc, DEC) × 6, (sc, DEC) × 6, DEC × 6. Each decrease round removes one single crochet from the spacing between decrease points, exactly as each increase round added one.

This symmetry means you can verify your decrease rounds are correctly written by checking whether they mirror your increase rounds. If they do not, there is an error in the pattern — or you have miscounted.

Reading a Full Decrease Round From Start to Finish

Before beginning any decrease round, read the full instruction. Identify the starting stitch count, the number of decreases called for, and the ending stitch count the pattern states. Calculate: starting count minus number of decreases equals ending count. If your math does not match the pattern, reread the round before you work it.

Example: Round 14 reads “(sc, DEC) × 6 — 12 sts.” Starting count is 18. Six decrease pairs consume 2 stitches each but produce 1 — six stitches removed from the total. 18 minus 6 equals 12. Math confirmed. Begin the round.

When and Where to Work Decreases in an Amigurumi Piece

Decreases begin after the piece reaches maximum circumference and are worked at the same evenly spaced intervals as the increases — the piece closes symmetrically toward the base opening, where polyfill and safety eyes must be installed before the final rounds seal the form.

The Sequence — Increases, Straight Rounds, Then Decreases

Every standard amigurumi piece follows the same three-phase construction sequence. Phase one is the increase section: you build outward from the magic ring with systematic increase rounds until the piece reaches its target circumference. Phase two is the straight section: you work several rounds of plain single crochet without increasing or decreasing, maintaining the circumference to create the cylindrical body of the form. Phase three is the decrease section: you work decrease rounds that mirror the increase sequence in reverse, closing the form toward the base.

For a complete understanding of how the amigurumi increase builds the first phase, see the guide to how to increase in amigurumi — it covers the sphere formula in full detail.

Installing Safety Eyes and Adding Stuffing Before the Last Decrease Rounds

Safety eyes must be installed before the decrease opening becomes too small to work through — typically when 4 to 6 decrease rounds remain. The eye post inserts from the outside of the piece through the fabric, and the locking washer attaches on the inside. Once the piece is closed and stuffed, the safety eyes cannot be installed or repositioned. Install them during the decrease section, not at the end.

For step-by-step safety eye placement guidance, the full article on how to attach safety eyes covers sizing, positioning, and washer locking in detail.

Stuffing follows safety eye installation. Add polyfill through the base opening before the final 2 to 3 decrease rounds. Do not wait until the last round — the opening will be too small to stuff evenly, and forcing fill through a tiny hole compresses it into an uneven mass that distorts the finished shape. For complete stuffing technique guidance, see the guide to how to stuff amigurumi.

How Many Decrease Rounds Close a Standard Amigurumi Head

A standard amigurumi head that reached a maximum circumference of 36 stitches across 5 increase rounds requires 5 decrease rounds to close — one decrease round for each increase round, working in reverse. After the final decrease round, you will typically have 6 stitches remaining. Fasten off, leaving a long tail, and use a tapestry needle to draw the tail through each remaining stitch, pull tight to close the final opening completely.

Emma’s experience shows that beginners who try to close the final 6 stitches without a tapestry needle — by slip stitching or chaining — leave a visible pucker at the base of the piece. The needle draw-through method produces a clean, invisible closure every time.

Common Invisible Decrease Mistakes and How to Fix Them

The three most frequent invisible decrease errors are catching both loops instead of front loops only, the hook slipping out between the two insertions, and stitch count errors from misread decrease rounds — each has a specific mechanical fix.

Catching Both Loops Instead of Front Loops Only

This is the most common invisible decrease error and the one that produces the gap you were trying to avoid. If you insert through both loops of one or both stitches, you are working a partial sc2tog rather than a true invisible decrease — and the visual result will show it.

The fix is to slow the first insertion and visually confirm you have the front loop only before proceeding to the second stitch. Use the tip of your hook to nudge the front loop away from the back loop if they are sitting too close together to separate easily. Once the separation is visible, insert. Do not proceed to step two if you are not certain about step one.

The Hook Slipping Out Before the Stitch Is Complete

Between the first and second insertion — while both front loops are on the hook and you have not yet yarned over — the hook can slip out if you lose control of the working angle. When this happens, you lose the first front loop and must restart the decrease from the beginning at the same two stitches.

The prevention is grip and angle control. Keep the hook nearly parallel to the fabric surface during the double insertion — the shallower the hook angle, the less likely it is to slide back out. On 2.5mm with mercerized cotton, this is a fine-motor skill that takes a small number of repetitions to stabilize. Practice the double insertion on a swatch before using it in a real project.

Stitch Count Errors After Decrease Rounds

A decrease round that ends with more stitches than the pattern states means a decrease was missed — you worked a regular single crochet where a DEC was called for. A count that is lower than stated means an extra decrease was worked, or a regular stitch was accidentally skipped.

Count after every decrease round using hook-tip contact on each stitch top. If the count is off, frog the round immediately. Do not continue on an incorrect stitch count in the decrease section — the closing geometry depends on every round being exactly right. One extra or missing decrease in the closing sequence produces an asymmetrical base that is visible in the finished piece.

The invisible decrease is the technique that separates a neat, professional amigurumi from one that looks unfinished at the seams. You have built the shape with increases, held it steady with straight rounds, and now you close it cleanly with a technique specifically designed to leave no trace. Master the front-loop entry, count after every round, and install your eyes and stuffing at the right moment — and your finished pieces will look exactly as they should.

Ready to take your next step? Learn how to stuff amigurumi and build on what you just mastered.

Frequently Asked Questions About the Amigurumi Invisible Decrease

What makes the invisible decrease “invisible”?

The invisible decrease works through the front loops only of two consecutive stitches, leaving the back loops undisturbed. This keeps the right-side surface of the fabric closed and smooth, with no gap at the decrease point. The standard sc2tog pulls through both loops of two stitches, displacing the stitch tops and opening a visible hole. The front-loop-only method prevents that displacement entirely.

Can I use sc2tog instead of the invisible decrease in amigurumi?

You can, but the result will show visible holes at every decrease point — especially once the piece is stuffed and the polyfill pushes outward against the fabric. The invisible decrease is a direct substitute for sc2tog in any pattern: same stitch position, same count result, significantly cleaner surface. There is no situation in standard amigurumi construction where sc2tog is the better choice.

When should I install safety eyes during the decrease section?

Install safety eyes when 4 to 6 decrease rounds remain — before the opening becomes too small to work through. The eye post inserts from outside the piece through the fabric, and the washer locks on the inside. Once the piece is fully closed, safety eyes cannot be installed or moved. Always position and lock them before the final stuffing and closing rounds.

What do I do if my invisible decrease still leaves a small gap?

A gap means you caught both loops on at least one of the two insertions rather than the front loop only. Frog back to that decrease, slow down on the first insertion, and visually confirm the front loop is separated from the back loop before your hook enters. Use the hook tip to nudge the loops apart if needed. Correct front-loop-only entry eliminates the gap completely.