What you might have been told
That home care is all the same really. That the salon one and the chemist one do the same job. That if the last lot did nothing, none of it works, and you are better off saving the money.
Here’s what’s actually happening
Home care only works when it is matched to your hair, the way a skincare routine only works when it is matched to your skin. The wrong moisturiser on the wrong skin does nothing, and it is not the moisturiser failing, it is that nobody read the skin first. Home care is the same. What was bought before was almost certainly never matched to what your hair actually needed, your texture, your colour, the thing you were trying to hold. It was chosen off a shelf, or handed over without a reason, so of course it did nothing. Matched to you, the very same idea, the insurance on your hair, behaves completely differently.
It’s no wonder you didn’t know
You did everything right. You bought it, you used it, you gave it a fair go. The part that was missing was never yours to supply, it was the reading of your hair first, the reason behind each thing, the match. Nobody did that part, so the result was never going to show. It is no wonder you concluded it does not work. You were judging something you were never actually given.
What this means for you
The question is never which product, it is what does your hair need, and then the right thing prescribed to answer it. Same architecture for every woman, a prescription matched to you inside it. Your stylist reads your hair, tells you what each thing is for and what happens without it, and matches it to the result you came in for. That is the difference between a shelf and a plan. Matched, home care holds the result between visits instead of fading with it, and this time you will feel the difference, because this time it was chosen for your hair, not for the shelf.

