It really depends on the person make sure if your losing weight don’t lose it to quickly. Biotin help with hair grow and the strength of your hair. Massage your scalp everyday. You can’t stop hair loss it a process. Don’t wash every day three to four days is best for most. Make homemade hair mask with eggs for leave for 2 hours then rise and use shampoo then put melted coconut oil all night then wash your like normal in morning. Also to help with not making a mess at night put plastic bag around head then tie around your head with hair ties and put a towel on your pillow. I hope this helps.