Читать книгу Can You Get Hooked On Lip Balm? онлайн
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Conditioners strengthen hair in two ways. The most important thing they do is smooth the cuticle and help keep it in place. The “strengthening” effect can be shown by measuring combing force. The other effect is internal. Some ingredients, like panthenol, penetrate into the cortex, the middle part of the hair. By interacting with the proteins in the cortex, these conditioners can improve the tensile strength of hair. This type of strength is measured with an instrument that pulls on individual hair fibers (after they’ve been removed from your head, of course!) and measures how much force it takes for the hair to break.
ARE EXPENSIVE CONDITIONERS BETTER?
So do expensive conditioners strengthen hair better than cheap ones? Not necessarily. The very, very cheap conditioners typically rely on one or two conditioning agents to do the job. And they usually can’t afford to use silicones, which are among the most effective smoothing agents. So, chances are, if you’re only spending a buck or two on your conditioner, you’re not getting the best product.