Tooth Tip Profiles (V/U/rounded) — 齿尖与クシ先の形状

Tooth Tip Profiles (V/U/rounded)

Quick look

• V-notch tips bite hardest — best for thick/coarse hair, highest marking risk.
• U-notch tips balance bite and smoothness — safer on fine/medium hair.
• Rounded tips glide most gently — lowest marking risk, ideal for soft blending.
• Straight tips are neutral — predictable on higher tooth counts.

Detailed Description

The tooth tip (齿尖 / クシ先) shape influences how a thinning/texturizing shear engages hair at the first point of contact. Common profiles include straight tips, V‑notch, U‑notch, rounded (on curved/arc faces), and specialized blends. Tip shape interacts with face geometry (face_profile) and spacing to affect bite, glide, and the likelihood of visible marks.

Profiles and Performance

• Straight tip: neutral bite; pairs with straight faces; can push in dense hair compared with V; predictable on higher tooth counts.
• V‑notch tip: strongest bite; stabilizes hair in thick/coarse sections; higher marking risk near the surface and fine ends.
• U‑notch tip: smoother entry than V; reduced marking risk on fine/medium hair; less debulking power than V.
• Rounded tip (curved/arc faces): very smooth entry; lowest marking risk among single‑tooth designs; best for soft blending; limited bite in dense hair.
• Mixed tip (combination/graded designs): blends characteristics; behavior varies by maker; test before use near the surface.

Best For

• V‑notch: internal debulking and control in thick/coarse hair at lower tooth counts.
• U‑notch / Rounded: soft blends and surface‑adjacent work on fine/medium hair (use light, multiple passes).
• Straight: general blending at higher counts (30–40T) where subtle removal is desired.

Pros

• Right tip profile reduces push, improves control, and limits visible marks.

Cons

• Aggressive tips (V) can mark fine ends; smooth tips (U/rounded) remove less bulk.

Best Techniques (Step‑by‑Step)

1. Match tip to task: choose V‑notch for internal bite; rounded/U for soft blends.
2. Keep passes internal for the softest results; teeth‑down near the surface reduces marks.
3. Close fully; use correct tension; prefer multiple light passes over one heavy cut.

Sizing & Fit

• Tip behavior changes with tooth count and spacing; test on a strand for cut ratio.

Maintenance & Setup

• Preserve tip integrity during sharpening; don’t flatten micro‑features; maintain correct tension to avoid catching.

Sources

• Wolff Industries: What Are Thinning Shears and When to Use Them — https://wolffindustries.com/blogs/technical-blog/choosing-the-right-scissors-for-barbers-and-stylists-buying-guide
• Mizutani: What Is Texturizing Shears? — https://mizutaniscissors.ca/
• Sam Villa: Haircutting Thinning Shears Guide — https://www.samvilla.com/blogs/hair-tutorials/texturizing-thinning-or-blending-shear-which-to-use
• Jatai: Thinning Shears vs Texturizing Shears — https://jatai.net/

Frequently Asked Questions

Which tooth tip profile has the strongest bite on thick hair? +

V-notch tips bite hardest. The sharp notch shape channels hair toward the cutting point and stabilises it during closure, which is why V-notch profiles dominate internal debulking work on thick or coarse sections at lower tooth counts. The trade-off is higher marking risk — V-notch tips can leave visible lines near the surface or on fine ends, so keep V-notch passes internal and use multiple light cuts rather than one heavy closure.

Which tip profile is safest for fine hair? +

Rounded tips on curved or arc-face designs glide most gently, making them the lowest-marking single-tooth option for soft blending on fine or medium hair. U-notch tips sit between V and rounded — they enter hair more smoothly than V but still offer more bite than rounded profiles, which suits surface-adjacent work on fine-to-medium hair. Straight tips are the neutral choice and pair well with higher tooth counts (30 to 40 teeth) where subtle removal is the goal.

Does tooth count change how a tip profile performs? +

Yes — tip behaviour shifts with both tooth count and spacing, which is why a strand test is worth the minute it takes before using a new thinner on a client. A V-notch at 15 teeth behaves differently from the same V-notch at 35 teeth; a rounded tip at 40 teeth removes noticeably less bulk than a straight tip at 40 teeth. Match the tip to the task — V for internal bite, rounded or U for soft blends — and adjust with multiple passes rather than harder closure.