{"id":81577,"date":"2026-09-14T13:07:18","date_gmt":"2026-09-14T10:07:18","guid":{"rendered":"https:\/\/leyakoreya.ee\/product\/cosrx-the-niacinamide-15-serum-20ml\/"},"modified":"2026-10-02T07:56:22","modified_gmt":"2026-10-02T04:56:22","slug":"cosrx-the-niacinamide-15-serum-20ml","status":"publish","type":"product","link":"https:\/\/leyakoreya.ee\/en\/product\/cosrx-the-niacinamide-15-serum-20ml\/","title":{"rendered":"COSRX The Niacinamide 15 Serum 20ml"},"content":{"rendered":"<p>The serum eliminates oily shine and normalizes sebaceous gland function, tightens enlarged pores, reduces inflammation, and improves the condition of problem skin, making it soft and smooth without causing dryness or irritation.<\/p>\n<p class=\"p1\" style=\"text-align: center\"><b><\/b><\/p>\n<p>The product prevents clogged pores and the resulting acne, blackheads, and comedones, maintains skin cleanliness, soothes, and accelerates wound healing. Its light, watery texture refreshes upon application, absorbs well, and does not leave a sticky residue.<\/p>\n<p><strong>15% niacinamide<\/strong> \u2013 a high concentration of multifunctional active ingredient that has effective sebum-regulating properties, prevents oily shine, slows down the transportation of melanin to the upper layers of the skin, preventing pigmentation, and increases collagen production.<\/p>\n<p><strong>Additional active ingredients: <\/strong><\/p>\n<p>\u2022 <strong>Pullulan<\/strong> has a strong antioxidant effect, smoothes, and protects the skin. The results of this component are comparable to expensive salon injections. Pullulan effectively rejuvenates and tightens, slows down the aging process, and strengthens tissues, restoring the skin&#8217;s smoothness, elasticity, and radiance.<\/p>\n<p>\u2022 <strong>Sodium PCA<\/strong> \u2013 a natural moisturizing agent that normalizes water balance, accelerates cell metabolism, strengthens the protective barrier, and improves elasticity and firmness.<\/p>\n<p>\u2022 <strong>Trehalose<\/strong> is a polysaccharide capable of binding water molecules, thereby maintaining an optimal level of hydration.<\/p>\n<p>\u2022<strong> N-Acetylglucosamine (NAG)<\/strong> increases moisture levels.<\/p>\n<p><strong>\u2022 Allantoin<\/strong> \u2013 an antioxidant that slows down cell aging, reduces reactivity, and stimulates regeneration.<\/p>\n<p>Suitable for combination, oily, and problem skin.<\/p>\n<p class=\"p1\"><b><\/b><\/p>\n","protected":false},"excerpt":{"rendered":"<p class=\"h1\"><strong>Sebum-regulating serum for acne with 15% niacinamide<\/strong><\/p>\n","protected":false},"featured_media":81578,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[10166],"product_cat":[3946,3915,4303,3969,4486,4028,4663,4615,4293,4359,4467,4526,4784,4772,4596,4679,4682],"product_tag":[],"class_list":["post-81577","product","type-product","status-publish","has-post-thumbnail","product_brand-cosrx-en","product_cat-6-treatment-mask-en","product_cat-10-step-skin-care-routine-en","product_cat-allantoin-en","product_cat-brands-en","product_cat-combination-skin-en","product_cat-cosrx-en","product_cat-enlarged-clogged-pores-en","product_cat-excess-sebum-shinines-en","product_cat-ingredients-en","product_cat-niacinamide-en","product_cat-oily-skin-en","product_cat-problem-skin-en","product_cat-serum-en","product_cat-4-treatment-en","product_cat-skin-problems-en","product_cat-skin-type-en","product_cat-skincare-en","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":[],"meta_data":[],"price_excl_tax":"12.056452","_links":{"self":[{"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/product\/81577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/comments?post=81577"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/media\/81578"}],"wp:attachment":[{"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/media?parent=81577"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/product_brand?post=81577"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/product_cat?post=81577"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/leyakoreya.ee\/en\/wp-json\/wp\/v2\/product_tag?post=81577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}