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Natural skin care uses topical creams and lotions made of ingredients available in nature.〔 Much of the recent literature reviews plant-derived ingredients, which may include herbs, roots, flowers and essential oils,〔〔〔 but natural substances in skin care products include animal-derived products such as beeswax, and minerals. These substances may be combined with various carrier agents, preservatives, surfactants, humectants and emulsifiers.〔 There are no legal definitions in the U.S. for the unregulated advertising terms “natural” or “organic” when applied to personal care products.〔 Consumers often express a preference for skin products with organic and natural ingredients.〔 The personal skin care market based on natural products has shown strong growth.〔 Clinical and laboratory studies have identified activities in many natural ingredients that have potential beneficial activities for personal skin care〔〔 but there is a shortage of convincing evidence for natural product efficacy in medical problems.〔 Some natural products and therapies may be harmful, either to the skin or systemically.〔〔〔 People prone to allergies should pay careful attention to what they use on their skin. Dermatologists may feel that there is enough scientific evidence to assist in the selection or avoidance of particular natural ingredients.〔 ==Background== (詳細はInternational Nomenclature of Cosmetic Ingredients (INCI) conventions.〔 Ingredients are listed in the order of their percentage within the product; natural ingredients are listed in Latin and synthetic ingredients are listed by technical name.〔 "The U.S. government has documented more than 10,500 ingredients in cosmetic products, but only a small percentage of those chemicals have been tested for safety. Of those that have been tested, some have been identified as carcinogens (causes cancer), teratogens (causes birth defects), and reproductive toxicants (damages the ability to reproduce)."〔https://www.niehs.nih.gov/health/assets/docs_a_e/ehp_student_edition_lesson_beauty_or_the_beast_508.pdf〕 add from 〔 The FDA surveyed 1,687 consumers ages 14 and older in 1994 about their use of cosmetics.〔 Nearly half of these consumers felt that a product claiming to be "natural" should contain all natural ingredients.〔(Lewis C. Clearing Up Cosmetic Confusion. TGC magazine )〕 However, although the United States Department of Agriculture (USDA) has designated within its certain requirements within its specific area of regulation for organic products,〔 the U.S. Food and Drug Administration (FDA) does not recognize a definition for natural products.〔 Accordingly, there are no legal definitions in the U.S. for the advertising terms “natural” or “organic” in personal care products.〔 The FDA prohibits certain ingredients in cosmetics.〔FDA. ''Cosmetics: Guidance & Regulation; Laws & Regulations. Prohibited & Restricted Ingredients''. (). U.S. Food and Drug Administration, Silver Spring, MD. Updated 26 January 2015. ()〕 Some organic products which are designated organic may be intensely modified, sometimes considerably more so than conventional products.〔 Add from 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Natural skin care」の詳細全文を読む スポンサード リンク
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