I have waist length thick hair so I use
2 egg yolks
2 tblsp extra virgin Olive oil
2 tblsp organic local honey
Blend avocado with fork until smooth. Add rest of ingredients. Apply to hair. Paying special attention to the ends. Wrap in celiphane or shower cap. Wrap hot towel around head. Leave in for 30 minutes. Wash and condition ad usual.
I'm not a doctor a specialist this only works for me. I'm giving this information out as advice only.