The invention relates to cosmetology, specifically to tobacco tar removal agents based on terpenes and terpenoids, and compositions for oral cavity hygiene based on the use of such agents, including toothpastes and other products. The invention renders possible effective tobacco tar removal. The tobacco tar removal agent comprises at least one carbon dioxide plant extract with terpene and/or terpenoid content in the extract of min. 10 mass %. Also oral care compositions are disclosed comprising the above-mentioned tobacco tar removal agent.