{"id":34977,"date":"2025-12-03T12:27:36","date_gmt":"2025-12-03T11:27:36","guid":{"rendered":"https:\/\/www.beautydecoded.com\/ingredient\/4-nitro-o-phenylenediamine-hcl\/"},"modified":"2025-12-03T12:27:36","modified_gmt":"2025-12-03T11:27:36","slug":"4-nitro-o-phenylenediamine-hydrochloride","status":"publish","type":"ingredient","link":"https:\/\/www.beautydecoded.com\/en\/ingredient\/4-nitro-o-phenylenediamine-hydrochloride\/","title":{"rendered":"4-NITRO-O-PHENYLENEDIAMINE HCL"},"content":{"rendered":"<p><strong>Ingredient type: \u00a0<\/strong>HUMECTANT\/WATER-SOLUBLE<\/p>\n<p>\u2728 Role: 4-nitro-o-phenylenediamine HCl is often used as a coloring agent in cosmetic products, particularly in hair dyes. It helps to provide specific color shades.<\/p>\n<p>  Ingredient type: Water-soluble<\/p>\n<p> \u200d\u2695\ufe0f Safety: This ingredient is generally safe when used in concentrations regulated by health authorities. However, its use in hair dyes is closely monitored.<\/p>\n<p>\u2728 Vegan: Yes, this ingredient is synthetic, making it compatible with vegan formulations.<\/p>\n<p>\u2728 Note: This ingredient may cause allergic reactions in some individuals, particularly when used in high concentrations or in non-compliant formulations. Patch testing is recommended for users prone to skin reactions. This ingredient is regulated due to its potential for irritation.<\/p>\n<p>  Found in: Mainly used in hair dyes and certain makeup products requiring colorants.<\/p>\n<p><strong>Comedogenic rating:\u00a0<\/strong><\/p>","protected":false},"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"class_list":["post-34977","ingredient","type-ingredient","status-publish","hentry"],"acf":[],"taxonomy_info":[],"featured_image_src_large":false,"author_info":[],"comment_info":"","_links":{"self":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/ingredient\/34977","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/ingredient"}],"about":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/types\/ingredient"}],"wp:attachment":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/media?parent=34977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}