Hair Extension Thickness, Curl Types & Length Measurement Guide #3017857 (License: Personal Use)

This visual guide displays six standard hair extension thicknesses (0.07mm to 0.25mm) and five common curl types (J, B, C, D, L), alongside proper length measurement technique-measuring straightened hair rather than its natural curled state. It clarifies that straight length is typically ~2mm longer than natural length, ensuring precise ordering and seamless blending.

Used on e-commerce product pages, educational blogs, or stylist guides where customers select extensions by thickness and curl; helps users avoid sizing errors by illustrating correct measurement practice.