# Dealing With Damage and Hair Loss

**By BR Keratin** · 2019-06-11

The cause of hair damage can be:  
  
Chemical effects  
  
Such effects include staining, discoloration, and a permanent change in shape. The products used to carry out these procedures are able to penetrate the cuticular layer into the cortex. Chemical perm compositions destroy disulfide bonds in polypeptide units.  
  
Environment  
  
Solar radiation, salt, chlorinated water - these factors can lead to the rupture of stable chemical bonds in the hair. Solar radiation can not only discolor hair but also dry it out, which increases the susceptibility of hair damage.  
  
Heat  
  
Using a curling iron, hairdryer, or other irons which do not pass through [hair](https://www.brkeratin.biz/collections/all) without a trace. Heating destroys the temporary (hydrogen) bonds in the hair, connecting the polypeptide links - this allows you to give your hair a new shape. However, excessive heat leads to irreparable damage to the hair structure.

**Tags:** hair care, hair damage, heat

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> Source: [BR KERATIN](https://www.brkeratin.biz/blogs/news/dealing-with-damage-and-hair-loss)