Question: what ingredients are bad in mascara?
Answer: Parabens. Parabens are harmful preservatives that are added to beauty products to increase their shelf life. ... 
Propylene Glycol. ... 
Retinyl Acetate (Vitamin A Acetate) ... 
Aluminum Powder. ... 
Coal Tar Dyes. ... 
Fragrance. ... 
Formaldehyde Releasing Preservatives. ... 
BHT and BHA.