Hair damage cell membrane complex

The cell membrane complex and the endoctitide are the most vulnerable to the attack by shampoos, to build-up and even to stretching and cracking. If build-up gets beneath the scales, it can cause scale lifting a type of scale damage that makes the hair feel dry, coarse and look dull... 

Diffusion or penetration of chemicals into hair is more concerned with permanent waves, hair straighteners, and hair dyes. However, given the recent evidence that shampoos over time can damage the nonkeratinous pathways for entry into hair and more recent evidence that some conditioner-shampoo interactions can damage the cell membrane complex, diffusion is also important to shampoos. 

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