The Float Test: How to Determine Your Hair Porosity
Discover how the float test can help you understand your hair porosity. Learn the science behind it and improve your hair care routine with this DIY method.

Ruth Adebayo
Hair Science Writer

The Float Test: How to Determine Your Hair Porosity
Understanding your hair's porosity is a game-changer in your natural hair care journey. If you've ever felt unsure about why certain products work wonders for some but not for you, it might be time to consider your hair porosity. In this guide, we'll delve into the float test—a simple DIY method to help you determine your hair porosity and tailor your hair care routine for beautiful, healthy hair.
What is Hair Porosity?
Before diving into the float test, let's clarify what hair porosity means. Porosity refers to your hair's ability to absorb and retain moisture. This characteristic is influenced by the condition of your hair's cuticle—the outermost layer of the hair shaft. Understanding your hair porosity can help you choose the right products and techniques to enhance your hair's natural beauty.
Types of Hair Porosity
- Low Porosity: The hair cuticles are tightly bound, making it difficult for moisture to penetrate. However, once moisture is absorbed, it stays locked in.
- Medium Porosity: Often called "normal" porosity, the cuticles are looser, allowing moisture to enter and be retained with relative ease.
- High Porosity: The cuticles are raised or damaged, making it easy for moisture to enter but also for it to escape.
The Float Test Explained
The float test is a popular, simple way to estimate your hair's porosity at home. It's an easy method that requires minimal supplies and offers quick insights.
How to Perform the Float Test
- Gather Your Supplies:
- A glass of water (room temperature) - A few strands of clean, dry hair (preferably freshly washed and without product)
- Conduct the Test:

About Ruth Adebayo
Ruth Adebayo combines her background in biochemistry with a passion for hair education. She breaks down complex hair science into practical, understandable advice for everyday naturals.
