You can find a full list of all 98 suspect shampoos here.
Easy Homemade Natural Shampoo
1/2 cup coconut milk
2/3 cup Castile soap
10-15 drops essential oil of your choice
2 teaspoons almond oil or olive oil
Mix together all the ingredients in the bottle and shake thoroughly. Just give it a shake before you use.
Source: livingtraditionally.com/illegal-cancer-causing-chemicals-found-nearly-100-shampoo-brands-1