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Hair health and science

What's Your Hair's Curvature?

1 minute

Unlock the mystery of your hair with a simple test! Determine your hair curvature with just a strand, ruler, and water. Whether your locks are curly or straight, find out how to best care for them and keep them looking their best.

A simple test to learn more about your hair

What this is testing:

Hair curvature

When you have very curly hair, the hair strands’ twists and turns require special care

What you’ll need

A hair strand, a ruler, a small cup of water

what is your hair curvature

An illustration of a hand soaking a hair into the waterAn illustarion showing the mechanism of hair measuring

How to conduct this experiment

Step 1: Take a hair strand from the middle to back of your head.

Step 2: Wet the strand of hair with water. Stretch out the hair strand and measure it, while it’s still wet.

Step 3: Let the hair strand dry naturally then measure it again.

Step 4: When is the hair strand longer—when wet or dry?

An illustarion showing the mechanism of hair measuring

Results

When dry, if the hair strand is shorter than the original wet length, your hair curvature indicates your hair is very curly, and therefore needs moisturizers that help seal and smooth cuticle edges to define curls and control frizz. When dry, if hair is about the same as the original wet length, your hair curvature indicates your hair is mostly straight and needs conditioning that helps to align and protect hair from damage.


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