A hair crimper is a heated styling tool with zig-zag plates that presses small, regular waves into your hair, adding instant texture and volume. Start with clean, completely dry hair, apply heat protectant, and work in one-inch sections: clamp the crimper near the roots for 5 to 7 seconds, release, slide down and overlap the last crimp, and repeat to the ends. Fine hair needs low heat (around 250–300°F / 120–150°C); thick hair can take medium to high heat (up to about 400°F / 200°C). Crimp all of your hair for a bold retro look, or crimp just a few hidden sections for lift and texture that nobody can see. It is one of the fastest ways to make flat hair look full — but it is still a hot tool, so heat protectant, moderate temperatures and rest days between sessions matter more than the tool itself.
What Is a Hair Crimper?
A hair crimper looks like a flat iron, but its plates are wavy instead of smooth. When you clamp a section of hair between those zig-zag plates, the heat sets the hair into a series of small, regular bends — the “Z” shaped waves that define crimped hair. The effect is very different from a curl: curls are round and spiral, while crimps are angular and ridged, and they read as texture rather than shape.
Crimped hair had its big moment in the 1980s, then came back as a retro trend — it is now all over TikTok, with creators showing off everything from full-head crimps to subtle hidden texture. The appeal is simple: crimping is one of the quickest ways to add volume and texture without a full curling routine, and it works on almost every hair length and texture. It looks best when the crimps are deliberate — even sections, consistent pressure, no gaps — rather than random.
Most crimpers come in two plate styles. A narrow crimper (around 1 inch wide) makes tight, defined zig-zags and is the classic choice for the full retro look. A wide crimper (around 1.5 to 2 inches) makes softer, broader waves and is better for a modern, tousled finish. Some tools have interchangeable plates, so you can switch between tight and loose crimps with one device.
How a Hair Crimper Works
The plates do the work, not your hands. Each clamp presses a zig-zag pattern into the hair shaft while the heat temporarily reshapes the hair’s internal bonds. When the section cools, the bends hold — which is why you should never touch, brush or separate crimped hair while it is still warm. Let every section cool completely before you move on, or the crimps will loosen before they set.
The overlap matters as much as the clamp. Each time you release and slide the crimper down, overlap the plates slightly over the last crimp you made. That overlap is what stops visible gaps and straight bands appearing between the zig-zags. If you see a smooth stripe running across your crimped section, you slid too far between presses.
Heat setting is the other half of the equation. Too cool and the crimps fall out within the hour; too hot and you cook the hair. The right temperature depends on your hair type — fine or damaged hair needs the lowest setting that still creates a visible crimp, while thick or coarse hair needs more heat to hold the shape. The heat settings section below gives starting points by hair type.
Hair Crimper vs Flat Iron vs Waver — Which Tool Does What?
People often confuse these three tools, but they produce three different results. A flat iron has smooth plates and straightens; a waver has round barrels and makes soft S-shaped waves; a crimper has zig-zag plates and makes angular, textured waves. If you already own a flat iron, you can fake crimps with it by flicking your wrist back and forth — but a real crimper is faster, more even and far less fiddly.
| Tool | Plates/barrel | Result | Best for | Watch out for |
|---|---|---|---|---|
| Hair crimper | Zig-zag plates | Angular, textured waves with volume | Retro crimps, root lift, hidden texture | Can look dated if overdone on the top layer; heat damage if used too often. |
| Flat iron | Smooth plates | Straight, smooth hair (or curls with a twist) | Sleek styles, smoothing frizz | Crimps made with a flat iron are uneven and slow. |
| Waver | 2–3 round barrels | Soft, uniform S-shaped waves | Beach waves, polished waves | Less volume at the roots than a crimper; waves can look too uniform. |
Choose by the finish you want, not by the tool you already own. If your goal is volume and texture with a bit of edge, the crimper wins. If you want smooth, flowing waves, a waver is the better buy. Our guide to which direction to curl hair covers the same idea for curling tools — the direction and the tool together decide the finished shape.
Plate Sizes and Which Effect Each Gives
Plate width and zig-zag depth together decide how the finished hair looks. Narrow plates with a tight zig-zag make small, sharp crimps that read as a bold pattern — the classic 1980s look. Wide plates with a shallow zig-zag make broad, soft waves that read as texture rather than a pattern, and they are the safer choice if you want a modern finish.
- Narrow crimper (about 1 inch): tight, defined zig-zags; best for the full retro look, short hair, and precise root lift. Takes longer on long hair because each section is small.
- Wide crimper (about 1.5–2 inches): softer, broader waves; best for a modern tousled finish, long hair, and quick all-over texture. Covers more hair per press, so it is faster.
- Mini or pencil crimper: very tight, fine crimps; best for accent sections, braids and updos, or for adding grip to slippery hair before an updo.
- Interchangeable-plate crimper: one handle with swappable plates; best if you want both tight and loose crimps without buying two tools. Check that the plates lock firmly — loose plates heat unevenly.
If you are buying your first crimper, a wide plate is the most forgiving starting point: the waves are softer, mistakes are less visible, and it works on the most hair types. You can always crimp tighter by pressing twice on the same section.
How to Use a Hair Crimper Step by Step
This is the routine that gives neat, long-lasting crimps without unnecessary damage. It follows the same order the best crimping guides agree on: clean dry hair, heat protectant, small sections, root to ends, cool before touching. Curl Centric’s step-by-step crimping guide follows the same sequence, with 5 to 7 seconds per press and a slight overlap between presses.
Step 1 — Start with clean, completely dry hair. Crimps hold best on freshly washed hair, and you should never use a hot tool on damp hair: the trapped water turns to steam inside the strand and damages it from within. Air-dry or blow-dry until the hair is 100% dry — if the roots still feel cool or damp, dry longer. If you are unsure about the washing part, our hair washing guide walks through the routine that leaves hair ready for heat styling.
Step 2 — Apply heat protectant and detangle. Spray or smooth heat protectant evenly through the hair, section by section, and comb it through so no part is unprotected. Do not apply oil before crimping — oil plus a hot iron can fry the hair and weigh the crimps down. Brush out all knots first; a tangle pressed between hot plates will set as a kink.
Step 3 — Heat the crimper and section your hair. Set the temperature for your hair type (see the table below) and let the tool heat fully, usually 1 to 3 minutes. Divide your hair into four sections — two at the back, two at the front — and clip the top layers away. Work from the bottom layer up, so finished sections do not get in your way.
Step 4 — Crimp from the roots down. Take a one-inch section from the bottom layer. Starting as close to the roots as you safely can without touching your scalp, clamp the crimper down and hold for 5 to 7 seconds. Release, slide the tool down, overlap the last crimp slightly, and press again. Repeat to the ends. Keep the section flat and taut — a twisted section heats unevenly and makes a spiral instead of a zig-zag.
Step 5 — Work section by section. Finish one layer before moving to the next, and let each section cool untouched before you touch it. Do not brush through crimped hair while it is warm: the crimps set as they cool, and brushing warm hair pulls them straight.
Step 6 — Finish the style. For a bold look, crimp every section. For a softer finish, finger-comb the crimps gently once they are fully cool — this loosens the zig-zags into waves. Lock the style with a light, flexible-hold hairspray, applied from a distance so it does not weigh the texture down.
Heat Settings by Hair Type
Temperature is where most crimping damage happens, and the rule is simple: use the lowest heat that still creates a crimp that lasts. Start low, test one section, and only turn the heat up if the crimps fall out within an hour. The American Academy of Dermatology’s healthy hair tips make the same point for all hot tools: limit heat exposure, use low or medium settings, and always use a heat-protective product.
| Hair type | Starting temperature | Hold time | Notes |
|---|---|---|---|
| Fine or thin | 250–300°F (120–150°C) | 5 seconds | Most damage-prone; never go above medium. |
| Damaged or color-treated | 250–300°F (120–150°C) | 5 seconds | Crimp less often; deep-condition between sessions. |
| Normal or medium | 300–350°F (150–180°C) | 5–7 seconds | The most forgiving range; start at the low end. |
| Thick or coarse | 350–400°F (180–200°C) | 7 seconds | Needs more heat to hold; still never hold one spot longer than 10 seconds. |
| Curly or coily | 300–350°F (150–180°C) | 5–7 seconds | Crimp on stretched or blow-dried hair; the pattern shows best on smoother lengths. |
Never hold the crimper in one place for more than 10 seconds, and never go over the same section twice at full heat — a second pass doubles the damage for very little extra hold. If a section did not take, let it cool, lower your expectations for that section, and move on rather than re-pressing it.
How to Get Waves, Volume or Texture — Three Different Looks
One tool, three results — the difference is where you crimp, how much you crimp, and how you finish it.
Soft waves: Crimp every section, then finger-comb or brush through the hair once it is completely cool. The zig-zags relax into loose, beachy waves. A light curl cream helps here: our guide to the best curl cream for wavy hair explains which formulas add definition without weighing waves down. Keep the crimps away from the very top layer if you want the waves to look natural rather than patterned.
Root volume: This is the crimper’s secret weapon, and it is invisible. Lift the top layer of hair and crimp only the under-layers near the roots — one or two presses per section, right at the scalp. When the top layer falls back over it, the hidden crimps act like a scaffold, lifting the roots for hours. It works especially well on fine, flat hair that collapses by midday, and nobody can see the crimps themselves.
All-over texture: Crimp every section from roots to ends, in even one-inch pieces, and leave the zig-zags defined — no brushing, no finger-combing. This is the bold retro look, and it suits nights out, festivals and photoshoots more than the office. Pair it with a centre part and let the texture do the talking.
Best Hair Types for Crimping
Crimping works on almost all hair, but the result — and the care needed — changes with texture. Fine hair gets the most visible volume from crimping, because even a little texture lifts flat strands; it is also the most damage-prone, so low heat and fewer sessions matter most. Thick hair holds crimps the longest and can take more heat, but it also takes the longest to crimp, so section carefully or the bottom layers will be done while the top is still untouched.
Wavy hair is the most forgiving: the natural wave hides small inconsistencies, and crimping adds definition where waves fall flat. Straight hair shows crimps most clearly, which is both the point and the risk — uneven sections are obvious, so keep them small and even. Curly and coily hair can be crimped, but the pattern competes with the natural curl; it works best on stretched or blow-dried lengths, and the crimps will look softer and less defined than the preview in your head.
Short hair (chin length and above) suits crimping well — the tool is quick to use and the texture adds width and movement. Very long hair takes patience: work in layers from the bottom up, and clip finished sections away so you do not re-crimp them by accident.
Common Mistakes to Avoid
Most bad crimping results come from the same few errors, and all of them are avoidable.
- Crimping damp hair. The most damaging mistake. Damp hair steams from the inside when pressed between hot plates, and the crimps will not hold anyway. Dry hair fully first.
- Skipping heat protectant. A crimper presses hot metal directly onto the strand for seconds at a time — there is no gentler hot tool. Protectant is not optional.
- Sections too large. Wide sections heat unevenly: the outside crimps while the inside stays straight, and the result looks patchy. One inch is the right width for most hair.
- Holding too long. More than 10 seconds in one spot does not make a better crimp — it makes a burnt one. Five to seven seconds is enough; if the crimp did not take, the temperature was too low, not the hold time too short.
- Brushing warm crimps. Crimps set as they cool. Touching, brushing or separating them while warm pulls the zig-zags straight. Wait until the hair feels cool to the touch.
- Crimping too often. Even with protectant and moderate heat, crimping is direct-contact heat styling. Once or twice a week is a sensible ceiling; daily crimping will show up as dryness, split ends and breakage within weeks.
- Re-pressing the same section. Going over a section twice at full heat doubles the damage. If a crimp did not hold, leave it — a slightly softer section is better than a fried one.
How Long Do Crimps Last?
On most hair, crimps last one to three days. Thick, coarse hair holds them longest; fine hair loses them fastest, especially in humidity. The crimps loosen gradually rather than falling out all at once — by day two they usually look like soft waves, which is a perfectly wearable second-day style.
Four things make crimps last longer: starting with completely dry hair, using a light texturizing spray or mousse before crimping, letting every section cool fully before touching it, and finishing with a light hairspray. Sleeping on a silk or satin pillowcase helps too — cotton creates friction that flattens texture overnight. If your crimps fall out within hours, the usual cause is temperature too low, sections too large, or hair that was not fully dry.
Cleaning and Caring for Your Crimper
A crimper lasts years if you look after it, and it performs better clean: product buildup on the plates creates hot spots and sticky residue that snags hair.
- After every use: once the plates are completely cool, wipe them with a dry cloth to remove loose product.
- Weekly (or when you see buildup): dampen a cloth with a little rubbing alcohol or a plate cleaner, wipe the plates, then wipe again with a clean damp cloth. Never submerge the tool or run water over it.
- Storage: let the tool cool fully before putting it away, and use the heat-resistant pouch if one came with it. Store it with the plates closed and the cord loosely looped, never wound tightly around the handle — tight winding frays the cord at the base, which is the most common reason crimpers fail.
- When to replace it: if the plates no longer heat evenly, if one plate is noticeably cooler, or if the temperature control stops working, replace the tool. Uneven heat is how one side of your head gets perfect crimps and the other gets damage.
Aftercare: Looking After Hair Between Crimping Sessions
Heat-styled hair needs recovery time. Give your hair at least a day or two between crimping sessions, and use that time to restore moisture: a deep-conditioning treatment once a week, a leave-in conditioner on the lengths, and a break from other hot tools on the same days you crimp. If your ends start looking dry or frayed, trim them — no product repairs a split end, and crimping over damaged ends only makes the damage more visible.
Oils can help the ends look healthier between sessions — our guide to the best hair growth oils explains which oils suit which hair fall cause and how to apply them — but remember never to put oil on your hair immediately before crimping. Oil goes on after styling, on cool hair, as a finishing step.
If you are still deciding which styles suit you before you commit to a tool, our free hairstyle finder quiz matches hairstyles to your face shape, hair type and routine in five questions — a faster way to shortlist looks than buying a tool for each one.
Frequently Asked Questions About Hair Crimpers
Q: What is a hair crimper used for?
A: A hair crimper adds zig-zag waves, volume and texture to your hair. Use it for a full retro crimped look, for soft waves when brushed out, or for invisible root lift by crimping only the hidden under-layers near the scalp.
Q: How do you use a hair crimper without damaging your hair?
A: Start with clean, completely dry hair, apply heat protectant evenly, and use the lowest heat setting that still creates a lasting crimp — around 250–300°F (120–150°C) for fine or damaged hair. Hold each press for 5 to 7 seconds, never more than 10, and crimp no more than once or twice a week.
Q: What is the difference between a hair crimper and a flat iron?
A: A flat iron has smooth plates and straightens hair; a crimper has zig-zag plates that press angular, textured waves into the hair. A flat iron can fake crimps by flicking the wrist, but a real crimper is faster, more even and gives much better volume at the roots.
Q: How long do crimped hair results last?
A: Usually one to three days. Thick hair holds crimps longest; fine hair loses them fastest, especially in humidity. Dry hair, small sections, full cooling before touching, and a light hairspray finish all help crimps last longer.
Q: Can you crimp short hair?
A: Yes — short hair suits crimping well, because the tool is quick to use and the texture adds width and movement. Use a narrow crimper for the most control on short lengths, keep sections small, and crimp from the roots for the fullest effect.
Q: Is crimping your hair bad for it?
A: Any hot tool can damage hair if used carelessly, and crimping presses hot plates directly onto the strand. The risk stays low if you use heat protectant, low to medium heat, short 5-to-7-second presses, and limit crimping to once or twice a week with rest days in between.