Even natural, edible ingredients can cause dry, itching scalp and skin.


Aside from preservatives and detergents, there are many other ingredients in hair products that can cause skin problems for some of us—even natural, edible ingredients can be irritating. This is a short list of common irritants:

  • Fragrances/perfumes
  • Propylene glycol (PG)
  • Polyethylene glycol (PEG)
  • Polyquaternium(s)
  • Artificial colorings
  • Hair dyes
  • Herbal extracts and essential oils, henna
  • Acids (i.e. salicylic acid, acetic acid)
  • Proteins, hydrolyzed proteins, amino acids, peptides, plant starch


Thanks! I have some known chemical sensitivities and now I can be on the lookout for other causes.