Como saber se o cabelo esta poroso  is not a term you hear often, but it’s an important one to know. It has a lot to do with how your hair looks and feels, especially when it comes to absorbing and maintaining moisture.

To find out if you have low, medium, or high porosity hair, use the “float test.” Start by collecting a strand of clean hair (preferably dry) and dropping it into a glass of water. If it floats, you have low porosity hair; if it sinks immediately, you have high porosity hair; and if it sinks slowly, you have medium porosity.

Locking in Hydration: The Ultimate Guide to Moisturizing Shampoo for Luscious Curls

Low-porosity strands have closed cuticles, and they are not as easy for water or other liquid products to absorb into. They hold moisture well once it’s inside, however.

Medium-porosity strands have raised cuticles, which make it easy for moisture to go in and out of the strands quickly. This is why it’s easier for them to become frizzy and tangly, and why they need extra hydration in their routines.

High-porosity strands have open cuticles, meaning they are easy for moisture to soak into, but it’s also hard for the strands to retain the water or product they receive. This is why they have more frizz and need extra hydration in their routines, as well as why they tend to dry out more quickly than other hair types.

To get your hair back to normal, try a clarifying shampoo with added keratin and plant proteins like this Shea Moisture number. Its tea tree oil works to dissolve build-up, while shea and grape seed oils work to deeply hydrate.