This white blood cell concentration interrupts hair growth, but Hair Revital X Review deep cleaning of the peptides will reduce the need for excess white blood cells and allow follicles to function normally. These claims are largely unsubstantiated and not entirely consistent with scientific knowledge of hair loss. Sebum is not generally recognized as being a significant factor in hair loss, and, in autoimmune disease it is one's own tissues that are attacked by defense cells such as white blood cells, and not dirt or debris which largely remains out side the body.
It is difficult to believe that either dirt or shampoo would penetrate very far inside hair follicles. Apart from DHT blocking shampoos it would seem that actual promoting of hair growth must be limited. There is though, no harm in using them as they may well be kinder to the hair than many shampoos with excessive detergent content. Many also contain nourishing nutrients that will help hair growth provided they are absorbed sufficiently.
Even if growth of new hair is not initiated these nourishing shampoos will help make the best of hair all ready present by helping to provide optimum conditions for hair production. Manufacturers use terms like moisturizing, volumising and thickening. If you are suffering some hair thinning it may be worth trying a specialist hair-promoting shampoo, but do not expect too much. It is unrealistic to expect a shampoo to be able to restore your hair like magic if you have extensive or long-standing hair loss.