Using natural oils such as apple cider vinegar / chamomile and rinsing it can promote and stimulate growth. Rosemary or wheatgerm oil are usually added to other herbs to combat this issue. Saw Palmetto contains free fatty acids and Phytoterols which inhibits DHT and prevent hair loss. When combined with nettle, this combination forms a powerful concoction against this problem.
Arnica, as well as rosemary, southernwood and marigold are also herbs for hair loss. The oils from any of these herbs are massaged directly onto the scalp. Boiled with burdock, nettle and peach leaf for daily hair washing, rosemary and sage are very useful herbs. Rosemary can also be used to fight dandruff. (Itching and dandruff can also be a cause of hair loss.)