"I have hereditary alopecia and any irritants on my scalp can make things flare up, making my hair loss worse. A few months ago, I contracted dermatitis on my face and it spread to my scalp. My face healed in days, but the flakiness on my scalp wouldn't go away, causing me to lose clumps of hair ALL day, everywhere. I tried SLS-free shampoos, shampooing less, shampooing more, conditioning carefully, and even using steroid-based topical ointments, and nothing really worked. But then I started using T/Gel shampoo every week and a half (it's very high-strength). It showed substantial effects on my hair after the first few uses! The itchiness disappeared and eventually my hair stopped falling as badly as before. Plus, new teeny-tiny hair is growing on the bald patches! It'll be a long road, but I'll continue to use T/Gel shampoo." —Imaan Sheikh
Get it from Amazon Canada for $13.79.