LIP TR EA TMENTS
Modern lip treatments are formulated to moisturize and protect lips exposed to potential drying and chapping from environmental factors such as solar UV radiation, wind, and cold temperatures. Important base materials used in the development of lip treatments include waxes (e.g., candelilla [Euphorbia cerifera], carnauba [Copernicia cerifera], Japan, cer- esin, microcrystalline, ozokerite, beeswax [Cera alba], paraffin), oils (e.g., castor seed [Ricinus communis], corn, safflower, coconut, hydrogenated castor, sunflower seed [Helianthus annuus]), silicone derivatives (e.g., dimethicone, dimethicone copolyol, C30-40 alkylmethicone), and lano- lin derivatives. In combination, these ingredients provide high shine, rigidity, hardness, enhanced wear, pleasant application feel, and moistur- izing effects. In addition, other chemicals, such as fatty acid esters (e.g., isopropyl myristate, palmitate), hard butters (e.g., shea butter [Butyrosper- mum parkii], cocoa butter [Theobroma cacao]), vitamins (e.g., magne- sium ascorbyl phosphate [vitamin C], tocopheryl acetate [vitamin E], panthenol [provitamin B5], retinyl palmitate [vitamin A], tocopherol [vitamin E]), herbal extracts (e.g., Aloe vera), emulsifiers (e.g., petro- leum, squalane, allantoin, cetyl alcohol), and skin-soothing organic com- pounds (e.g., menthol, phenol, camphor), provide additional product texturization and skin protection. While flavoring extracts (e.g., natural orange, vanilla fruit [Vanilla planifolia]) and fragrance provide pleasant product odor and taste, the addition of synthetic preservatives (e.g., meth- ylparaben, propylparaben, BHT) assists in maintaining product purity and freshness with repeated use.
Many consumers desire the additional lip treatment feature of protec- tion from damaging type A and/or B solar UV radiation. Added active sunscreen ingredients must be safe when ingested in small amounts and not interfere with product esthetic characteristics. These chemicals usually include UV-B protectors such as octyl methoxycinnamate and padimate O and UV-A protectors such as oxybenzone added at concentrations ranging from 7.5 to 1.5 percent.
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