How it is caused: The under-functioning of the sebaceous glands may be one of the causes. In such cases, the skin feels dry and the scalp feels tight and slightly itchy. The hair may also have a lot of static. In cases of extreme dryness, the hair becomes finer and more brittle. NOTE: Overexposure to the sun and the elements, improper care products, overly-hot blow-dryers, curling irons, hot rollers, and chemical services can lead to dryness. In such cases the scalp may be normal, only the hair is dry. Often, if hair is lacking lipids, it can't retain moisture. A remedy should aim at both.
How it is treated: Always use mild shampoos enriched with lipids and moisturizing elements specifically suited to dry hair. Use a toner tailored to stimulate, activate and strengthen scalp functions. Targeted hair treatments compensate for the scalp's inability to provide protective substances to the hair.