🎀

Perm Rod Size and Types Guide

Sep 19, 2025

Overview

This video provides an overview of different cold wave perm rod sizes, their effects on various hair lengths, and includes guidance on selecting the appropriate rod based on desired curl type.

Types of Perm Rods and Their Features

  • There are multiple types of perm rods, with cold wave rods being the most popular.
  • Perm rods can be concave, creating tighter curls in the middle, or straight, producing uniform curls.
  • The color-coding system and rod diameter are standard across brands.
  • There is no single formula for choosing a perm rod; the selection depends on the desired look and hair length.
  • More wraps around a rod produce more bends or tighter curls.

Perm Rod Size Chart and Color Coding

  • All rods are 3.27 inches in length; diameter varies by color.
  • Yellow: 3/8 inch; extremely tight curl.
  • Blue: 3/8 inch, slightly thicker; extremely tight corkscrew curl.
  • Pink: 7/16 inch; very tight spiral curls.
  • Gray: 1/2 inch; firm, tight, small curls.
  • White: 9/16 inch; firm, bouncy curls, suitable for spiral perms.
  • Purple: 5/8 inch; tight, springy curls.
  • Sand: 11/16 inch; medium curls, adds volume.
  • Orange: 12/16 inch; body wave on short hair, medium curls on longer hair.
  • Jumbo Green: 1 1/16 inch; body on short/medium/long hair, beachy waves.
  • Jumbo Black: 1 1/4 inch; body on medium/long hair.
  • Jumbo Red: 1 3/8 inch; only for body, for medium/long hair.
  • Jumbo Brown: 1 1/2 inch; largest, used only for body.

Results by Rod Size

  • Jumbo brown/red/black/green: best for adding body or loose, beachy waves, especially on longer hair.
  • Orange/sand: For body waves or medium curls; adds volume on any length.
  • Purple/white/gray: Produce tighter, springy, or bouncy curls for all hair lengths.
  • Pink/blue/yellow: Create very tight, firm corkscrew or spiral curls, suitable for short to long hair.

Tips and Principles for Choosing Perm Rods

  • Consider both the desired curl type and hair length when selecting a rod.
  • Concave rods vary curl tightness, while straight rods keep curls uniform.
  • Color coding and diameter are universal and should guide selection.