{"id":74735,"date":"2026-07-05T21:02:11","date_gmt":"2026-07-05T19:02:11","guid":{"rendered":"https:\/\/www.beautydecoded.com\/?p=74735"},"modified":"2026-07-05T21:05:28","modified_gmt":"2026-07-05T19:05:28","slug":"this-little-known-korean-brand-has-just-broken-into-the-top-10-skincare-brands-weve-broken-down-its-best-seller-ingredient-by-ingredient","status":"publish","type":"post","link":"https:\/\/www.beautydecoded.com\/en\/this-little-known-korean-brand-has-just-broken-into-the-top-10-skincare-brands-weve-broken-down-its-best-seller-ingredient-by-ingredient\/","title":{"rendered":"This little-known Korean brand has just cracked the top 10 in skincare: we\u2019ve broken down its best-seller ingredient by ingredient"},"content":{"rendered":"
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This week's surprise brand is all about vitamin C: we've broken down its formula<\/h2>\n\n\n\n

Every week, the Beauty Decoded community reveals the rising marquess (these are the most-searched marquess on the Beauty Decoded app). And this time, an unknown entry has slipped into the rankings: Arencia<\/strong>, a Korean brand that hardly anyone was looking for just seven days ago.<\/p>\n\n\n\n

Its flagship product? A vitamin C booster. The perfect opportunity to do what we do best: take a closer look and examine the formula. Because when it comes to vitamin C, two bottles that look alike can yield radically different results.<\/p>\n\n\n\n

This Week's Rankings<\/h3>\n\n\n\n

At the top, stability: Anua<\/strong> remains the leader, followed by CeraVe<\/strong> (up sharply) and SVR<\/strong>. Then comes the surprise: Arencia jumps straight to the top of the standings<\/strong>, alongside established names such as Av\u00e8ne, Medicube, Caudalie, Yepoda, Aromazone<\/strong> and Cosrx<\/strong>.<\/p>\n\n\n\n

Vitamin C: The Most Misunderstood Ingredient in Your Bathroom<\/h3>\n\n\n\n

Before we break down Arencia, here\u2019s a helpful reminder. Vitamin C isn\u2019t an ingredient\u2014it\u2019s a family<\/strong> ingredients. And not all of them are created equal.<\/p>\n\n\n\n

There is the pure and powerful form, the\u2019ascorbic acid<\/strong>\u00a0 incredibly effective but unstable and sometimes irritating. And then there are its\u00a0derivatives<\/strong>\u00a0(ascorbyl glucoside, sodium ascorbyl phosphate, 3-O-ethyl ascorbic acid\u2026), which are gentler and more stable, but often have lower concentrations and are less easily absorbed.<\/p>\n\n\n\n

That's the whole point. And that's also why, on the app, vitamin C serums are among those that are the most divisive<\/strong> : Some are loved, while others are considered ineffective or annoying.<\/p>\n\n\n\n

What Arencia's Formula Reveals<\/h3>\n\n\n\n

Let's take a hard look at the list of ingredients in Arencia's vitamin C booster.<\/p>\n\n\n\n

First, the good news: the brand doesn't rely on just one form of vitamin C, but on a\u00a0cocktail<\/strong>. It includes\u00a03-O-ethyl ascorbic acid at a concentration of 5 %<\/strong>\u00a0(50,000 ppm) a stable and well-tolerated derivative backed by a\u00a0microdose of pure ascorbic acid<\/strong>theascorbyl glucoside<\/strong>\u00a0and\u00a0sodium ascorbyl phosphate<\/strong>. A rather clever \u00abmultivitamin C\u00bb strategy: targeting several mechanisms of action at once.<\/p>\n\n\n\n

The rest of the formula makes sense: from the niacinamide<\/strong> (brightness and control), of the glutathione<\/strong> and theadenosine<\/strong>(antioxidants), and a soothing trio panthenol \/ allantoin \/ arginine<\/strong> to minimize the risk of irritation associated with vitamin C.<\/p>\n\n\n\n

The downside, to be completely transparent: the presence of\u2019pure ascorbic acid, even in small doses, as a base ingredient<\/strong>, raises the classic question of stability over time. <\/p>\n\n\n\n

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Beautydecoded's opinion<\/h4>\n\n\n\n

\u00abThis formula is cleverly designed, and that's exactly why we need to be cautious. Combining multiple forms of vitamin C doesn't guarantee greater effectiveness\u2014it's sometimes just a marketing ploy.\".<\/p>\n\n\n\n

What matters clinically is the dominant form and its concentration. In this case, 3-O-ethyl ascorbic acid at 5 % is a good choice\u2014it is stable and well-tolerated, and it is the true active ingredient. Microdoses of the other forms primarily serve a supplementary role.<\/p>\n<\/blockquote>\n\n\n\n

The Beauty Decoded Community's Opinion<\/h3>\n\n\n\n

Arencia is too new to have accumulated verified reviews on the app\u2014that\u2019s the nature of a surprise newcomer: the buzz comes before the experience. But the community data on vitamin C in general speaks volumes.<\/p>\n\n\n\n

The contrast is striking. A vitamin C serum like the C Glow by Geek and Gorgeous<\/strong> reaches a peak at 4,76\/5<\/strong> (48 reviews), while another vitamin C product from a popular brand tops out at 3,13\/5<\/strong> (38 reviews) for a product that makes a similar claim. Proof that price and hype are no guarantee of results.<\/p>\n\n\n\n

When it comes to safe bets, the\u2019SVR Hydra Vitamin B3 Ampoule<\/strong> reassures the community (4.44\/5, 54 reviews), just like the C15 Super Booster by Paula\u2019s Choice<\/strong> (4.8\/5). The lesson is clear: when it comes to vitamin C, it\u2019s never the brand that makes the difference, but the formula and how to use it<\/strong>.<\/p>\n\n\n\n

Things to remember<\/h3>\n\n\n\n

The launch of Arencia is a great opportunity to remember what really matters: an appealing new product deserves to be analyzed, not just taken at face value. Its vitamin C formula is well-designed, but its actual effectiveness will depend on its stability and your skin.<\/p>\n\n\n\n

A serum that leaves you puzzled?<\/strong><\/p>\n\n\n\n

Stop guessing. Download the app for free Beauty Decoded<\/strong> (iOS & Android), scan the vitamin C serum you\u2019re interested in\u2014whether it\u2019s Arencia or any other brand\u2014and instantly discover its actual formula, stability, and verified reviews from the community. Do your research before you buy.<\/p>","protected":false},"excerpt":{"rendered":"

This week\u2019s surprise brand is all about vitamin C: we\u2019ve decoded its formula. Every week, the Beauty Decoded community reveals the rising marquess (these are the most searched-for marquess on the Beauty Decoded app). And this time, an unknown brand has slipped into the rankings: Arencia, a Korean brand that few\u2026<\/p>","protected":false},"author":120,"featured_media":7527,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","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":"narrow","_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":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-74735","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"Actualites"}]},"featured_image_src_large":["https:\/\/www.beautydecoded.com\/wp-content\/uploads\/2023\/08\/kalos-skincare-kzjH8CCWAD0-unsplash-1024x683.jpg",1024,683,true],"author_info":{"display_name":"Sylvain David","author_link":"https:\/\/www.beautydecoded.com\/en\/author\/beautydecoded\/"},"comment_info":0,"category_info":[{"term_id":1,"name":"Actualites","slug":"actualites","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":311,"filter":"raw","cat_ID":1,"category_count":311,"category_description":"","cat_name":"Actualites","category_nicename":"actualites","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/posts\/74735","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/users\/120"}],"replies":[{"embeddable":true,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/comments?post=74735"}],"version-history":[{"count":10,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/posts\/74735\/revisions"}],"predecessor-version":[{"id":74748,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/posts\/74735\/revisions\/74748"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/media\/7527"}],"wp:attachment":[{"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/media?parent=74735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/categories?post=74735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.beautydecoded.com\/en\/wp-json\/wp\/v2\/tags?post=74735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}