This old Austrian remedy was used religiously by Empress Elisabeth - ‘Sisi’ - of Austria, who was well-known for her beauty and charisma. To be used whenever you need to channel the fierce girl boss you are.

Empress Sisi's shiny hair rinse

2 egg yolks
2½ tablespoons Cognac
1½ tablespoons raw apple cider vinegar
Whisk the egg yolks and Cognac together until smooth. Work the mixture into clean, wet hair, brushing it through with a wide-toothed comb. Rinse out with lukewarm water. Then rinse your hair out a second time, but this time add the apple cider vinegar to the water running over your hair (for extra shine). And that’s it: an Empress’ beauty routine!
Enough for one application. Shelf life: Use right away
Superpowers explained
Egg yolks add protein and strength to fine hair. Cognac adds brightness and shine to hair and creates volume. Apple cider vinegar detangles and de-frizzes hair, balances pH levels and gives hair shine.

This is an edited extract from All Natural Beauty by Karin Berndl & Nici Hofer published by Hardie Grant Books and is available in stores nationally.