https://en.wikipedia.org/wiki/Ambergris

Ambergris is one of the rarest find and its value surpasses the one of gold. It can be used in natural perfumes in an ethical perspective. Ambergris is an excreta from Sperm Whales that takes value by the long periods of time it would have been floating in the sea, which is why New Zealand’s being one of the finest. Thus no whales are harmed nowadays when collecting beach washed Ambergris. Ambergris scent is truly unique and a natural treasure, its aroma is too complex to describe properly but bears both sea elements and animalistic/leathery ones. With aging, ambergris develops sweet floral notes reminiscent of honey or Sauternes sweet white wine. Nadia only works with true ambergris, which she tinctures herself, you will never find any synthetic ambergris in NadiaZ products.