Eggs are known to promote hair regrowth as they have high levels of protein. Although this may sound unappealing, an egg hair mask is a natural hair loss treatment that is effective. To use this remedy, mix one egg and one tablespoon olive oil in a bowl. Apply the hair mask in your scalp after shampooing your hair. Let the mask sit in your damp hair with a shower cap for at least 10 minutes. Then, rinse and wash with a moisturizing conditioner.