Essential oil characteristics and effects, but also the products of the very same tree can vary grossly. Lavender oil has long been used in the production of perfume. However, it can be estrogenic and antiandrogenic, causing problems for prepubescent boys and pregnant women, in particular. Lavender essential oil is also used as an insect repellent. Rose oil is produced from the petals of "Rosa damascena" and "Rosa centifolia". Steam-distilled rose oil is known as "rose otto", while the solvent extracted product is known as "rose absolute". The potential danger of an essential oil is sometimes relative to its level or grade of
Attar of Nishapur of further products of his pen: He also states, in the introduction of the "Mukhtār-Nāma", that he destroyed the "Jawāhir-Nāma' and the "Šarḥ al-Qalb" with his own hand. Although the contemporary sources confirm only `Attar's authorship of the "Dīwān" and the "Manṭiq-uṭ-Ṭayr", there are no grounds for doubting the authenticity of the "Mukhtār-Nāma" and "Khusraw-Nāma" and their prefaces. One work is missing from these lists, namely the "Tadhkirat-ul-Awliyā", which was probably omitted because it is a prose work; its attribution to `Attar is scarcely open to question. In its introduction `Attar mentions three other works of his, including one entitled