Washing your hair daily may not be harmful if you use the right shampoos.
Slightly acidic shampoos, which do not contain soap, can be used for daily hair washing. The role of these preparations is to preserve the natural of hair oil, so that the sebaceous glands do not start overproducing it. Hair products with higher pH are used for washing extremely oily hair. They cause the hair to dry out and that is why they should not be used on a daily basis.
The main culprit for how often someone will need to wash their hair is the function of the sebaceous glands. Each person has a different sebum secretion. The sebaceous glands create oil that serves to coat the hair and scalp. In this way it preserves them from damages and prevents their dehydration. Genetic predisposition, but also hormonal status, influence the function of sebaceous glands.
In children, the sebaceous glands are extremely weak until they reach puberty. Their hair does not need to be washed every day.
Excess oil from hair follicles, dandruff and dead cells are removed with shampoos. That is why you should choose the appropriate shampoo, because its main role is to remove the oil, without drying out the scalp and damaging the hair.
Dandruff, along with oily hair, is another problem, both aesthetically and dermatologically. People who use anti-dandruff shampoos should not wash their hair more than twice a week. Those who need to wash their hair more often should use shampoos created for everyday use.
It is a misconception that shampoos have a great influence on hair growth or hair loss. They can slightly stimulate hair growth because they stay on the scalp for a short time. The hair follicle, which determines its thickness, whether it will fall out or not and how fast it will grow, is located under the scalp, so no washing agent can significantly affect it. Whether hair will fall out, grow and what quality it will be, mostly depends on hormones, diet and medications. However, we should not ignore the fact that aggressive and strong shampoos can cause redness, dandruff and itching of the scalp.