I also avoid lots of stuff.
My pett hate is
Dimethicone
also known as Cyclomethicone
It is pure silicone, and makes your skin feel really amazingly smooth. Only that really, it doesn´t.It just puts a layer of silicone on your hair or skin, so it SEEMS smooth, but it´s just the silicone that is smooth iyswim. Next time you wash, the silicone will come off.
It´s a con, and can´t be good for your skin.
Almost ALL creams, especially serums, anything that promises to "lock in moisture" (it does, the same way coating your face in plastic would!)and conditioner.
I use pure almond oil, from health shops, and also REN products now.