This ensures that the hydrophobicity (water repellency) of the hair is well kept, therefore it is less porous (meaning it doesn’t easily let water in).”
Peter reveals, “Low porosity hair means all the cuticle cells are flat and it is likely to have the lipic layer on the surface. This is the healthiest-looking porosity of hair you can have. If you have virgin or undamaged hair, it will most likely be low porosity. This is when the hair is highly porous.” Low porosity hair, revealed. “If damage occurs continuously, the cuticle layer will be removed completely. Translation: think frizzy locks and dryness or roughness. So how does this damage actually affect the appearance of your tresses? “The first signs of damage are the complete or partial removal of the fatty acid layer on the hair surface, together with cuticle chipping,” reveals Peter. So, what does hair porosity mean? Porosity refers to how your hair absorbs humidity from the external environment and is broken down into 3 categories: low, medium and high porosity hair.Īccording to Peter, “The level of your hair’s porosity is determined by the amount of damage to the outer cuticle.” Hair can become damaged in a number of ways including using styling tools without a heat protectant, colour treatments (like bleaching) and a lack of maintenance. Hair porosity: The basics Hair porosity types Plus, we reveal why it’s so important to maintain and manage high porosity hair so you can have a good hair day, every day. Delving deeper into the biology that dictates your hair porosity, Peter Bailey, Global Technical Manager, Hair Care at Unilever unpacks the ins and outs of this science within your strands.
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