What do we mean by protein?
If your curls are protein sensitive, it is useful to know which products contain protein. But what do we use as protein? There are various lists, but which do you keep?
We have decided to keep the list below, also on the advice of @ingecurls. She has created a product sheet in which she has broken down many product brands into protein and protein-free, and whether it contains certain ingredients. You can buy hem here : https://ingecurls.com/winkel/
So this list contains the real protein and no extracts or which could react like protein.