This is such an important topic — I get thousands of questions about what I use. I’m not here to recommend a specific brand (even though I have my favorites!), but I’ll share the main principles that helped me through the transition. 1. Always use gentle shampoos — no SLS or SLESLet your scalp rest. Harsh detergents can dry out your roots and weaken hair follicles. A mild shampoo with a clean formula is essential. 2. Purple shampoo — but carefully!I used purple shampoo a maximum of once a week. It toned down the bright silver shade so it blended better with my dark dyed ends. But! It can be…