Question: what are the bad ingredients in hair products?
Answer: Benzene. This is a toluene, which can damage the respiratory system, irritate the skin, and cause developmental damage in fetuses. ... 
Diethanolamine (DEA) Triethanolamine (TEA) ... 
Formaldehyde. ... 
Fragrance. ... 
Isopropyl Alcohol. ... 
Methylisothiazolinone. ... 
Parabens. ... 
Phthalates.