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 beewax, and minerals. These substances may be combined with various carrier agents, preservatives, surfactants, humectants and emulsifiers.: 5–8
There are no legal definitions in the U.S. for 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.
Many countries require that the ingredient composition of skin care products is listed on the product, using the International Nomenclature of Cosmetic Ingredients (INCI) conventions.: 4 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. 4 “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).”
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. 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.
Some organic products which are designated organic may be intensely modified, sometimes considerably more so than conventional products
History
Plant extracts and herbs have been used by many cultures as cosmetics and perfumes since ancient times.
Research is scientifically assessing natural products, selected based on experience in the ancient era.validated use of these materials and products awaits further assessment.
Cosmetics
Consumer preference
Consumers often express a preference for skin products with organic and natural ingredients. The 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 the skin. Dermatologists may feel that there is enough scientific evidence to assist in the selection of particular natural ingredients.
Consumers expected products to perform as advertised.
Industry response
Voluntary discontinuation of precursor substances that release small quantities of formaldehyde, which is a carcinogen, as well as reducing levels of the potentially carcinogenic impurity 1,4-dioxane. Polycyclic musk fragrance ingredients, which have raised concerns as persistent and bioaccumulative endocrine disruptors, are being discontinued.
Alternative medicine
There are significant reservations about complementary and alternative medicine (CAM) including a “shortage of evidence supporting the efficacy and safety of CAM” for skin problems. However, patients express a desire to utilize natural ingredients as treatment. A literature search found a growing prevalence of CAM use for skin conditions. A number of textbooks address CAM perspectives of skin care. The purpose of this section is to review botanical compounds in skin care; a broader review the history and theory behind other CAM modalities such as psychocutaneous therapies, acupuncture and homeopathy can be found in recent reviews.
Western
The plant monographs with dermatological relevance of the former German Commission E have recently been reviewed.
According to Baumann, “Botanical compounds for which dermatologic and cosmetic applications have emerged include: olive oil, chamomile, colloidal oatmeal, oat kernel extract, feverfew, acai berry, coffee berry, curcumin, green tea, pomegranate, licorice, paper mulberry, arbutin, and soy. “Many of these botanical sources offer biologically active components that require further in vitro and in vivo investigation”.
A review of 35 plant families found that a “variety of phytomolecules, derived in particular from polyphenols, triterpenes and sterols classes, demonstrated a promising activity.”