If you paint your hair at home, may I suggest organic hair tint? They are way more expensive than drugstore ones, but they leave the hair in better condition, where the others ruin it and are too aggressive. Organic tints are also environmentally friendly. I love how they treat my hair and leave it with more volume. Organic stores sometimes have an area for beauty products.
Daily multivitamin has made a difference for me. Arnica & jojoba-based shampoos are great, too. Relaxation techniques are also great