That said, I will mention, in short, that not all synthetic ingredients are toxic. There are some synthetic substances that are actually benign and have no negative health effects. BUT these are NOT the ones that are used in most commercial beauty products.
I used to use Oil of Olay, Nevia, Aveeno, Dove soap and those expensive department store brands, for years, and came to realize how toxic these products are. And besides that, none of the commercial cosmetics I’ve ever used improved my skin or hair. In fact, they were most likely the cause of my problems. I used to have dry, cracked, ashy, itchy skin, especially on my legs, and no matter what kind of commercial product I used, that never got better, until I started making my own organic soaps and skin care products. The same holds true for my hair. My hair used to be so dry and weak. I had to put hair grease on it constantly just so I could manage it. And my hair was always falling out…piles of hair in the sink and in my comb and brush. My homemade organic shampoos  rinses, moisturizers, and treatments, have completely changed the texture and health of my hair. Now my hair is strong and healthy and has a lovely shine. I have “baby skin” now, due to my own organic recipes. Over the years, I also developed a strong intolerance to the scents of commercial synthetic perfumes. They trigger an allergic reaction.