I only have 3 plants growing but all different strains which I have applied the Castille soap to at about 1 tablespoon/liter and I didn't notice any 'after effect' on the leaves other than perhaps a bit cleaner, like they got a bud wash while still growing! But I will now more closely observe when I do the next application.I’ve experienced an effect a bit like that using either the Green cleaner or the Castile soap.
only on some plants tho...
ONe of my plants that has finer/softer leaves, the leaves go a bit crepe-paper like afterwards. Similar effect from both products. Other plants right alongside were not affected in the same way.