This is such a moving review to read, thank you for taking the time to write it all out. Going from near-constant scalp irritation to almost none, plus fuller, shinier hair that's holding up through a season where you expected shedding — that's exactly the kind of change we hope for, especially for something as personal as hair changes from aging and medication.
It sounds like you've found a great rotation — The Invigorating Shampoo for the thinning, The Exfoliating Shampoo for your sensitive scalp days, and the lavender one when you want that extra moisture and scent. No silicones, sulphates, or harsh chemicals across the board, so it makes sense your scalp is finally getting some peace.
And starting with the aluminum cans for the sustainability angle, then staying for the results — that's the whole thing we're trying to build.
Thank you again, Alison. Wishing you continued good things with your hair.