Herbal Medicine- Hair-Skin-Body -Nails 101

I have and have had mechanical damage for years and didn't know I had it or why...(been detangling on wet hair). Plenty of spilt ends and single strand knots at the end of my hair strands but also splits in the midshaft. Breakage around the four sections I always split my hair into...Im bout to cut the damage off and start fresh with a new routine...if I can ever figure this hair stuff out...Help!