How does high humidity typically affect curly hair?

High humidity typically leads to frizz and reduces definition in curls due to the way moisture interacts with the hair's structure. Curly hair is often more porous, which means it can absorb excess moisture from the air. When the hair absorbs this humidity, the cuticles can swell and lift, leading to a rougher surface. As a result, the natural curl pattern can become less defined, and the hair may appear frizzy rather than smooth.

In high humidity conditions, the excess moisture can disrupt the balance of oils and moisture already present in the hair, making it challenging for styling products to maintain the desired hold and definition. This phenomenon is commonly experienced by those with textured hair, where the definition of individual curls diminishes, and frizz becomes more pronounced. This understanding is essential for hairstylists and clients alike, as it impacts product selection and styling techniques used in humid environments.