I am in the process of growing out my hair so that it becomes long, healthy, and strong. I read that on top of eating healthy, experts recommend taking supplements to support hair growth and vitality. I am wondering what you recommend. Do you recommend taking Viviscal or flax oil tablets or biotin tablets or vitamin B complex or a combination of these?

We cover hair extensively in both books. I personally don't supplement for my hair, and I used to have brittle, dry hair before I changed my diet and lifestyle. I use coconut oil or Argan oil on it at times, but other than that, I get all my hair-building nutrients from my diet.