Kasturi attar, also known as musk amber, is derived from the Kasturi deer, specifically its musk gland. The glandular secretion is collected and then aged to produce the attar.  Kasturi attar, also known as musk amber, is derived from the Kasturi deer, specifically its musk gland. The glandular secretion is collected and then aged to produce the attar. This unique attar has an animalistic scent with sweet, earthy, and musky undertones. It is a highly prized and valuable fragrance ingredient.. It is a highly prized and valuable fragrance ingredient.