Thinning Rate Guide
Description
Thinning rate measures the percentage of hair removed per cut. Learn how tooth count, spacing, and design affect thinning rate and how to choose the right percentage.
Thinning Rate Guide (梳き率ガイド)
Quick look
- What it is: A classification of thinning scissors by the percentage of hair removed per closing stroke
- Range: From 5% (ultra-fine finishing) to 80% (extreme barber fade work)
- Most common: 20-30% スタンダード (standard), the workhorse range for general salon thinning
- Determining factors: Tooth count, tooth spacing, tooth width, and comb blade geometry
Why it matters
Thinning rate is the single most important specification when selecting a thinning scissors. It tells you how much hair the scissors will remove with each closing stroke, expressed as a percentage of the hair captured between the blades. Choosing the wrong rate for the task produces results that are either too subtle to be effective or too aggressive to control.
| Rate | Japanese term | Application |
|---|---|---|
| 5-10% | 超ソフト (chō sofuto) | Ultra-fine finishing. Invisible blending on completed cuts. Multiple passes required for any visible effect. |
| 10-15% | ソフト (sofuto) | Fine hair work. Subtle weight removal without visible texture change. Ideal for delicate or thin hair. |
| 15-20% | ライト (raito) | Standard light thinning. General maintenance on fine-to-medium hair. Safe for less experienced stylists. |
| 20-30% | スタンダード (sutandādo) | The most common range. General-purpose volume reduction, bulk removal, and shape refinement. The workhorse for most salon work. |
| 30-40% | ミディアム (midiamu) | Significant volume reduction. Thick, dense hair that needs substantial weight removed. Requires confident placement. |
| 40-50% | ヘビー (hebī) | Heavy removal. Fade work transitions, aggressive debulking on very thick hair. Professional judgment essential. |
| 50-60% | チャンカー (chankā) | Chunking. Creates visible texture and separation. Used for deliberate chunky effects or rapid bulk removal. |
| 60-80% | エクストリーム (ekusutorīmu) | Extreme removal. Barber fade blending where maximum hair removal per stroke is needed. Specialized tool, not for general salon use. |
The actual rate achieved depends on more than tooth count alone. Tooth spacing, individual tooth width, and the comb blade geometry (V-groove, stepped, or flat) all interact to determine how much hair is captured and cut versus how much passes through untouched. Two scissors with identical tooth counts can produce meaningfully different cut rates if their tooth geometry differs.
Always test a new thinning scissors on a practice head or strand test before using it on a client. Published rates are approximate, and the real-world result depends on hair density, texture, and technique.
| Related: Blade Orientation (正刃 vs 逆刃) | Comb Blade Geometry | Tooth Tip Profiles |
Sources
- Joewell — Thinning Product Line (JP/EN)
- Professional thinning rate classification standards