That seems to make sense. I guess products would stop working only if the texture of your hair changed (due to processing, chemicals, or stress) or the climate changed, or build-up...etc. I did notice the lady that was working at the store did have dyed hair (so maybe that's why she feels the need to change up her products).
Hating my 3b/c curls lately...
Products that I want to try in the future: Ojon Restorative Treatment