{"id":3042,"date":"2015-09-18T08:00:46","date_gmt":"2015-09-18T13:00:46","guid":{"rendered":"https:\/\/www.ulprospector.com\/knowledge\/?p=3042"},"modified":"2024-06-26T08:46:42","modified_gmt":"2024-06-26T14:46:42","slug":"pcc-foaming-effect-skin-care-emulsions","status":"publish","type":"post","link":"https:\/\/ulprospector.ul.com\/3042\/pcc-foaming-effect-skin-care-emulsions\/","title":{"rendered":"Foaming Effect in Skin Care Emulsions"},"content":{"rendered":"

\"SCEmulsion02\"It is known that, among their\u00a0many characteristics,\u00a0surfactants<\/a>\u00a0result in the formation of foam. Surfactants are intentionally used in excess in\u00a0shampoos<\/a>\u00a0and\u00a0soap systems<\/a>\u00a0to create foam, and the higher the concentration, the stronger the foam effect of the product.<\/p>\n

This sounds perfect when we are talking about hair care products; however, this represents a problem when we are dealing with skin care emulsions. An excessive amount of\u00a0emulsifier<\/a>,\u00a0in combination with\u00a0alcohols<\/a>\u00a0or long-chain\u00a0esters<\/a>,\u00a0also results in the formation of micro-foam.<\/p>\n

In some formulations, using more than 8% of alcohols and long-chain esters in association with\u00a0self-emulsifying waxes<\/a>\u00a0is enough to provide what we call a “foaming effect.\u201d Formulators may face this problem while developing a product that contains a high amount of oils, as they will certainly need enough emulsifier to prevent creaming.<\/p>\n

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Another common situation is when we want to formulate a creamier emulsion with high viscosity. The excess of emulsifier leads to consumer rejection of the product. Consumers will see a white trace (micro-foam) while spreading the product on the skin, and scrubbing more will only increase the formation of foam.<\/p>\n

The solution is, in part, simple: we should decrease the concentration of emulsifiers and\u00a0waxes<\/a>.\u00a0But the result will obviously be a reduced viscosity. We should use\u00a0polymers<\/a>\u00a0to compensate for the loss of viscosity, since, unlike surfactants and waxes, polymers do not cause a foaming effect.<\/p>\n

There are 2 classes of polymers:\u00a0synthetic<\/a>\u00a0and\u00a0natural<\/a>. Both contribute to the viscosity of the system. The most indicated for emulsions with high concentration of oil are\u00a0Acrylates\/C10-30 Alkyl Acrylate Crosspolymer<\/a>\u00a0(Pemulen TR-2<\/a>). They not only provide viscosity, but also stabilize oil droplets, adding to the stability of the system.<\/p>\n

This emulsifying power is not seen in vegetal polymers. Therefore, in emulsions with high oil content, we can indeed use vegetal polymers, but always associated with synthetic polymers. An excellent option is the association of Acrylates\/C10-30 Alkyl Acrylate Crosspolymer and\u00a0xanthan gum<\/a>. The combination of these polymers with waxes and emulsifiers ensure a formulation with no foaming effect.<\/p>\n

In emulsions that do not have high oil content, it is possible to use other synthetic polymers such as carbomers<\/a>\u00a0(Carbopol\u00ae<\/a>\u00a0series) or Sodium Polyacrylate Starch (Makimouse). To guarantee an even more pleasant final sensorial, we can add low viscosity\u00a0dimethicone<\/a>\u00a0to improve spreadability. Beyond sensorial benefits, dimethicones also form a synergetic system that will further reduce the foaming effect.<\/p>\n

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It is known that, among their\u00a0many characteristics,\u00a0surfactants\u00a0result in the formation of foam. Surfactants are intentionally used in excess in\u00a0shampoos\u00a0and\u00a0soap systems\u00a0to create foam, and the higher the concentration, the stronger the foam effect of the product. This sounds perfect when we … Continued<\/a><\/p>\n","protected":false},"author":38,"featured_media":3092,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"episode_type":"","audio_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","footnotes":""},"categories":[5],"tags":[],"ppma_author":[1260],"class_list":{"0":"post-3042","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-personal-care-cosmetics-cleaners","8":"entry"},"yoast_head":"\nFoaming Effect in Skin Care Emulsions - Prospector Knowledge Center<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ulprospector.ul.com\/3042\/pcc-foaming-effect-skin-care-emulsions\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Foaming Effect in Skin Care Emulsions - Prospector Knowledge Center\" \/>\n<meta property=\"og:description\" content=\"It is known that, among their\u00a0many characteristics,\u00a0surfactants\u00a0result in the formation of foam. 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