{"id":752,"date":"2014-07-03T08:00:10","date_gmt":"2014-07-03T13:00:10","guid":{"rendered":"https:\/\/www.ulprospector.com\/knowledge\/?p=752"},"modified":"2016-04-12T09:20:50","modified_gmt":"2016-04-12T15:20:50","slug":"pcc-sulfate-free-challenge","status":"publish","type":"post","link":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/","title":{"rendered":"Tackling the Clear, Sulfate-Free Formulation Challenge"},"content":{"rendered":"

\"SulfateFreeSM\"It is widely known within the community of cosmetic
\nchemists\u00a0that\u00a0<\/span>there are particular challenges when formulating\u00a0<\/span>products that must meet certain \u2018free-of\u2019 requirements. \u2018Sulfate-free<\/a>\u2019 (EU<\/a>) is no exception. While there are several classes of surfactants<\/a>\u00a0(EU<\/a>) that are suitable replacements for sulfated products, the challenge usually occurs when an attempt is made to increase the viscosity of a sulfate-free system. This becomes even more difficult when the requirement is to maintain clarity and achieve viscosity targets without the use of polymeric thickeners<\/a>\u00a0(EU<\/a>).<\/p>\n

If the use of natural polymers is allowed, then the palette of available ingredients would broaden to include gums such as Xanthan gum<\/a>\u00a0(EU<\/a>). However, if the brief is more restrictive, this is a tall order indeed! While such requirements would negate traditional and popular approaches such as the use of carbomers<\/a>\u00a0(EU<\/a>), cellulose derivatives<\/a>\u00a0(EU<\/a>) or highly ethoxylated materials like PEG-150 Distearate<\/a>\u00a0(EU<\/a>), there are other avenues that are available to the formulator.<\/p>\n

Those skilled in the art might naturally first resort to Sodium Chloride<\/a>\u00a0(EU<\/a>) as a thickening agent \u2013 which is a cost effective approach that may deliver the desired results, depending on the salt sensitivity of the surfactant system involved. The limits for salt tolerance can easily be established by creating a salt curve with the salt contribution from surfactants included in the overall totals. Furthermore, product performance and aesthetics should also be evaluated to determine whether the rheological profile is being negatively affected to the extent that it results in stringiness.<\/p>\n

In addition to the primary surfactants selected, the role of secondary surfactants in building viscosity should not be underestimated. Betaines<\/a>\u00a0(EU<\/a>), Hydroxysultaines<\/a>\u00a0(EU<\/a>), Alkanolamides<\/a>\u00a0(EU<\/a>) and Amine Oxides<\/a>\u00a0(EU<\/a>) are but a few of the chemical classes that have multifunctional benefits, including viscosity enhancement. Given the current status of mono- and diethanolamines, mono- and diisopropanolamines have proven to be effective substitutes as foam boosters<\/a>\u00a0(EU<\/a>) and viscosifiers. These chemical classes are well represented among products listed on ULProspector.com. These types of ingredients, in conjunction with Sodium Chloride, may also benefit non-ionic systems, which can be stubbornly non-responsive to salt.<\/p>\n

Surfactant ratios also play a significant role is maximizing viscosity and should be thoroughly investigated. Understandably, given aggressive timelines, time is not always a luxury that the formulator can afford. Employing an experimental design as a tool to identify optimal ratios should be a consideration whenever possible. Similarly, the order in which surfactants are added can also impact viscosity and should be investigated as well as the system\u2019s response to pH adjustment.<\/p>\n

While development of clear sulfate-free shampoos and shower gels without polymeric thickeners may at first seem to be a daunting task, be assured that there are several formulation and ingredient options available that would allow you to demonstrate your creative talents.<\/p>\n","protected":false},"excerpt":{"rendered":"

It is widely known within the community of cosmetic chemists\u00a0that\u00a0there are particular challenges when formulating\u00a0products that must meet certain \u2018free-of\u2019 requirements. \u2018Sulfate-free\u2019 (EU) is no exception. While there are several classes of surfactants\u00a0(EU) that are suitable replacements for sulfated products, … Continued<\/a><\/p>\n","protected":false},"author":5,"featured_media":880,"comment_status":"open","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":[1255],"class_list":{"0":"post-752","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":"\nTackling the Clear, Sulfate-Free Formulation Challenge<\/title>\n<meta name=\"description\" content=\"There are many surfactants that are suitable replacements, but the challenge occurs when trying to increase the viscosity of a sulfate-free system.\" \/>\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\/752\/pcc-sulfate-free-challenge\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tackling the Clear, Sulfate-Free Formulation Challenge\" \/>\n<meta property=\"og:description\" content=\"There are many surfactants that are suitable replacements, but the challenge occurs when trying to increase the viscosity of a sulfate-free system.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/\" \/>\n<meta property=\"og:site_name\" content=\"Prospector Knowledge Center\" \/>\n<meta property=\"article:published_time\" content=\"2014-07-03T13:00:10+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2016-04-12T15:20:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2014\/07\/shampoo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"495\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Priscilla Taylor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Priscilla Taylor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/\"},\"author\":{\"name\":\"Priscilla Taylor\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/#\\\/schema\\\/person\\\/f22f87c0ddb6d98c4ba3f5ba3f557605\"},\"headline\":\"Tackling the Clear, Sulfate-Free Formulation Challenge\",\"datePublished\":\"2014-07-03T13:00:10+00:00\",\"dateModified\":\"2016-04-12T15:20:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/\"},\"wordCount\":469,\"commentCount\":5,\"image\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ulprospector.ul.com\\\/wp-content\\\/uploads\\\/2014\\\/07\\\/shampoo.jpg\",\"articleSection\":[\"Personal Care & Cosmetics\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/\",\"url\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/\",\"name\":\"Tackling the Clear, Sulfate-Free Formulation Challenge\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ulprospector.ul.com\\\/wp-content\\\/uploads\\\/2014\\\/07\\\/shampoo.jpg\",\"datePublished\":\"2014-07-03T13:00:10+00:00\",\"dateModified\":\"2016-04-12T15:20:50+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/#\\\/schema\\\/person\\\/f22f87c0ddb6d98c4ba3f5ba3f557605\"},\"description\":\"There are many surfactants that are suitable replacements, but the challenge occurs when trying to increase the viscosity of a sulfate-free system.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/#primaryimage\",\"url\":\"https:\\\/\\\/ulprospector.ul.com\\\/wp-content\\\/uploads\\\/2014\\\/07\\\/shampoo.jpg\",\"contentUrl\":\"https:\\\/\\\/ulprospector.ul.com\\\/wp-content\\\/uploads\\\/2014\\\/07\\\/shampoo.jpg\",\"width\":800,\"height\":495},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/752\\\/pcc-sulfate-free-challenge\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/ulprospector.ul.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Tackling the Clear, Sulfate-Free Formulation Challenge\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/#website\",\"url\":\"https:\\\/\\\/ulprospector.ul.com\\\/\",\"name\":\"Prospector Knowledge Center\",\"description\":\"Welcome to the blog for UL Prospector, the most comprehensive raw material search engine for product developers.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/ulprospector.ul.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/#\\\/schema\\\/person\\\/f22f87c0ddb6d98c4ba3f5ba3f557605\",\"name\":\"Priscilla Taylor\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/ulprospector.ul.com\\\/media\\\/2017\\\/10\\\/Priscilla-Taylor_avatar_1508792435-96x96.jpg06fbf66f636be4a04854ca705c820697\",\"url\":\"https:\\\/\\\/ulprospector.ul.com\\\/media\\\/2017\\\/10\\\/Priscilla-Taylor_avatar_1508792435-96x96.jpg\",\"contentUrl\":\"https:\\\/\\\/ulprospector.ul.com\\\/media\\\/2017\\\/10\\\/Priscilla-Taylor_avatar_1508792435-96x96.jpg\",\"caption\":\"Priscilla Taylor\"},\"description\":\"Priscilla Taylor joined Prospector\u00a0in May, 2013 as an expert in personal care and cosmetics. In this role, she provides invaluable insight by consulting on all matters related to the industry. Her significant contributions to site optimizations and ingredient classifications enhance user experience on ULProspector.com. Priscilla's expertise was developed during her 21 years as a product development professional. She began her career in the 90's at Helene-Curtis Industries in Chicago, where she discovered her passion for putting a product together from concept to completion. When Helene-Curtis was purchased by industry giant Unilever in 1996, Priscilla was promoted to Senior Product Development Manager. She had the privilege of working with global teams to develop and launch products both domestically and worldwide for many popular brands, including Dove and Suave. Concurrent to her work at Prospector, Priscilla is a Product Development Chemist with Bria Research Labs. She is actively involved in formulating for a diverse array of clients. While she mostly formulates personal care and cosmetics products, she has also had the opportunity to work on projects for the household, industrial and institutional cleaners industry. Priscilla was born and raised in Trinidad, West Indies, but she considers Chicago her adopted hometown. She lives there with her daughter, Jessica, and her Dachshund, Peanut, who assist her with her favorite pastime: cheering on Chicago's famed sports teams.\",\"sameAs\":[\"https:\\\/\\\/ulprospector.ul.com\"],\"url\":\"https:\\\/\\\/ulprospector.ul.com\\\/author\\\/priscilla-taylor\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Tackling the Clear, Sulfate-Free Formulation Challenge","description":"There are many surfactants that are suitable replacements, but the challenge occurs when trying to increase the viscosity of a sulfate-free system.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/","og_locale":"en_US","og_type":"article","og_title":"Tackling the Clear, Sulfate-Free Formulation Challenge","og_description":"There are many surfactants that are suitable replacements, but the challenge occurs when trying to increase the viscosity of a sulfate-free system.","og_url":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/","og_site_name":"Prospector Knowledge Center","article_published_time":"2014-07-03T13:00:10+00:00","article_modified_time":"2016-04-12T15:20:50+00:00","og_image":[{"width":800,"height":495,"url":"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2014\/07\/shampoo.jpg","type":"image\/jpeg"}],"author":"Priscilla Taylor","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Priscilla Taylor","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/#article","isPartOf":{"@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/"},"author":{"name":"Priscilla Taylor","@id":"https:\/\/ulprospector.ul.com\/#\/schema\/person\/f22f87c0ddb6d98c4ba3f5ba3f557605"},"headline":"Tackling the Clear, Sulfate-Free Formulation Challenge","datePublished":"2014-07-03T13:00:10+00:00","dateModified":"2016-04-12T15:20:50+00:00","mainEntityOfPage":{"@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/"},"wordCount":469,"commentCount":5,"image":{"@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/#primaryimage"},"thumbnailUrl":"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2014\/07\/shampoo.jpg","articleSection":["Personal Care & Cosmetics"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/","url":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/","name":"Tackling the Clear, Sulfate-Free Formulation Challenge","isPartOf":{"@id":"https:\/\/ulprospector.ul.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/#primaryimage"},"image":{"@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/#primaryimage"},"thumbnailUrl":"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2014\/07\/shampoo.jpg","datePublished":"2014-07-03T13:00:10+00:00","dateModified":"2016-04-12T15:20:50+00:00","author":{"@id":"https:\/\/ulprospector.ul.com\/#\/schema\/person\/f22f87c0ddb6d98c4ba3f5ba3f557605"},"description":"There are many surfactants that are suitable replacements, but the challenge occurs when trying to increase the viscosity of a sulfate-free system.","breadcrumb":{"@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/#primaryimage","url":"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2014\/07\/shampoo.jpg","contentUrl":"https:\/\/ulprospector.ul.com\/wp-content\/uploads\/2014\/07\/shampoo.jpg","width":800,"height":495},{"@type":"BreadcrumbList","@id":"https:\/\/ulprospector.ul.com\/752\/pcc-sulfate-free-challenge\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ulprospector.ul.com\/"},{"@type":"ListItem","position":2,"name":"Tackling the Clear, Sulfate-Free Formulation Challenge"}]},{"@type":"WebSite","@id":"https:\/\/ulprospector.ul.com\/#website","url":"https:\/\/ulprospector.ul.com\/","name":"Prospector Knowledge Center","description":"Welcome to the blog for UL Prospector, the most comprehensive raw material search engine for product developers.","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ulprospector.ul.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/ulprospector.ul.com\/#\/schema\/person\/f22f87c0ddb6d98c4ba3f5ba3f557605","name":"Priscilla Taylor","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ulprospector.ul.com\/media\/2017\/10\/Priscilla-Taylor_avatar_1508792435-96x96.jpg06fbf66f636be4a04854ca705c820697","url":"https:\/\/ulprospector.ul.com\/media\/2017\/10\/Priscilla-Taylor_avatar_1508792435-96x96.jpg","contentUrl":"https:\/\/ulprospector.ul.com\/media\/2017\/10\/Priscilla-Taylor_avatar_1508792435-96x96.jpg","caption":"Priscilla Taylor"},"description":"Priscilla Taylor joined Prospector\u00a0in May, 2013 as an expert in personal care and cosmetics. In this role, she provides invaluable insight by consulting on all matters related to the industry. Her significant contributions to site optimizations and ingredient classifications enhance user experience on ULProspector.com. Priscilla's expertise was developed during her 21 years as a product development professional. She began her career in the 90's at Helene-Curtis Industries in Chicago, where she discovered her passion for putting a product together from concept to completion. When Helene-Curtis was purchased by industry giant Unilever in 1996, Priscilla was promoted to Senior Product Development Manager. She had the privilege of working with global teams to develop and launch products both domestically and worldwide for many popular brands, including Dove and Suave. Concurrent to her work at Prospector, Priscilla is a Product Development Chemist with Bria Research Labs. She is actively involved in formulating for a diverse array of clients. While she mostly formulates personal care and cosmetics products, she has also had the opportunity to work on projects for the household, industrial and institutional cleaners industry. Priscilla was born and raised in Trinidad, West Indies, but she considers Chicago her adopted hometown. She lives there with her daughter, Jessica, and her Dachshund, Peanut, who assist her with her favorite pastime: cheering on Chicago's famed sports teams.","sameAs":["https:\/\/ulprospector.ul.com"],"url":"https:\/\/ulprospector.ul.com\/author\/priscilla-taylor\/"}]}},"authors":[{"term_id":1255,"user_id":5,"is_guest":0,"slug":"priscilla-taylor","display_name":"Priscilla Taylor","avatar_url":"https:\/\/ulprospector.ul.com\/media\/2017\/10\/Priscilla-Taylor_avatar_1508792435-96x96.jpg","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/posts\/752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/comments?post=752"}],"version-history":[{"count":0,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/posts\/752\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/media\/880"}],"wp:attachment":[{"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/media?parent=752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/categories?post=752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/tags?post=752"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/ulprospector.ul.com\/wp-json\/wp\/v2\/ppma_author?post=752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}