The sector of aromatic and medicinal plants in Morocco is full of potential thanks to the diversity of plant species. Therefore, more than 4000 species have been identified of which 800 are endemic and 600 are classified as products for aromatic or medicinal use, which has allowed it to be ranked well globally.Annual national productions amount to several hundred thousand tonnes while providing alternative income to local communities, generating tens of thousands of working days each year.This ethnobotanical study was carried out in several moroccan cities and for this purpose we have set three objectives: determining the frequency of use of medicinal plants by the population, the choice of aromatic plants most used in moroccan folk medicine, and particularly the biological activities sought in our work and the collection of information on selected plants using two types of questionnaires that have been addressed to the general public and herbalists. The results obtained constitute a very valuable source of information for the regions studied and for the national medicinal flora. They could be a database for further research in the fields of phytochemistry and pharmacology and in order to search for new natural substances.

Contact dermatitis is a common skin disease in Morocco, which represents about 20% of dermal diseases treated in Moroccan hospitals. In this study, our aim was to investigate the anti-eczema activity of essential oils of three Moroccan aromatic and medicinal plants: Thymus vulgaris, Mentha spicata and Citrus limonum vis-a-vis the contact dermatitis which is a manifestation allergic to the skin, in response to contact with a foreign substance called allergen. It is characterized by irregular lesions sometimes microvesiculeuses or dry. These lesions are characterized functionally by intense itching and scratching force, they may be infected. The three oils studied, have shown efficacy in the treatment of contact dermatitis.