Haircut Tool for Cutting Longer Hair Evenly at Home

HairFin is a simple DIY haircut tool for cutting longer hair at home. Unlike traditional tools, it lets you measure hair precisely so you can cut evenly for consistent results.

These guides come in 2”, 3”, 4”, 5”, and 6” sizes for longer, even haircuts beyond standard clipper guard sizes.

Self haircut at home using HairFin hair cutting tool

Why HairFin

Standard clipper guards max out around 1 inch. HairFin is designed for longer lengths, 2 to 6 inches, so you can cut longer hair evenly at home.

Cutting hair evenly at home with HairFin hair cutting tool.

With the HairFin you can

• cut longer hair evenly at home
• maintain layered styles
• do a self haircut without guessing

Before and after cutting hair evenly at home with HairFin

How It Works

The HairFin mounts between your fingers and acts as a fixed-length guide. When positioned at the base of your fingers, it sets a consistent distance from your head so each section of hair is cut to the same length.

When mounted correctly, your fingers remain free to grasp hair at its base, allowing you to pull it straight, slide the guide into position, and trim evenly without guessing.

To use the HairFin:

  1. Mount between your fingers
  2. Grab hair at the base
  3. Slide guide into position
  4. Cut above your hand

Each section is cut to a consistent length.

A cartoon depicting how to measure and where to cut hair with the HairFin guide

Learn more: How to cut hair evenly at home

Before You Buy

HairFin works differently than standard hair cutting tools and takes a few uses to get comfortable.

For best results:

• Watch the instructional videos first
• Many beginners find a beard trimmer easier to start with

Best for users willing to learn a simple technique. Most improve quickly after a few uses.

HairFin hair cutting tool mounted on hand for DIY haircut


Choose Your Set


Set of 3 $15.95
Picture of the HairFin Set of 3 kit
Includes 2", 3", and 4" HairFin guides.



New! - Set of 5 $23.95
Picture of the HairFin Set of 5 kit
Includes 2", 3", 4", 5", and 6" HairFin guides.



New! - Set of 2 $15.95
Picture of the HairFin Set of 2 kit
Includes 5" and 6" HairFin guides.

As Seen on Shark Tank

Tony Litwinowicz, inventor of the HairFin, was featured on Shark Tank season 13 episode 20 on ABC!

A logo showing as seen on Shark Tank

Patented and Made in USA

The HairFin is protected by US Patent D939,771 S, and US Patent 11,998,099 B2. We manufacture the HairFin here in our home town of Derby, Connecticut.

Made in USA hair cutting tool

Instructional Videos

HairFin is a different kind of hair cutting tool, so learning the technique makes a big difference.

Watch tutorials here: Instructional Videos
Also follow on YouTube and Instagram.