I recently started my natural cosmetic formulating course with chemist corner so I am at the beginning of my formulation journey.
I made a liquid shampoo using anionic and non-ionic surfactants with cationic guar gum. I really like how its consistency turned out. However I know the fact that anionic and cationic surfactant are not compatible together. Does this rule apply to other ingredients as well? The shampoo looks pretty stable after 48 hours. What should I expect? Any instability later?