{"product_id":"eaa20-vitamin-c-brightening-serum","title":"EAA20 Brightening Antioxidant Serum 30ml｜Ethyl Ascorbic Acid brightens and evens skin tone · Antioxidant · Stable and non-yellowing | Made in Hong Kong","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eDull skin, uneven skin tone, stubborn acne marks – it's not that you're not trying hard enough with your skincare, it's that the Vitamin C you're using keeps oxidizing and losing its effectiveness.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eEAA20 Brightening \u0026amp; Antioxidant Serum features a 20% high-concentration formula of the new-generation Vitamin C derivative, 3-O-Ethyl Ascorbic Acid (Ethyl Vitamin C). Its stability far surpasses traditional L-Ascorbic Acid, making it less prone to oxidation and yellowing, with long-lasting and stable efficacy. It can be used morning and night, allowing your brightening efforts to truly deliver the intended results.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e🇭🇰 Developed by Hong Kong formulators and manufactured locally in Hong Kong.\u003cbr\u003e\u003cem\u003eDeveloped and Made in Hong Kong.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e30ml｜Lasts approximately 2–3 months\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"\"\u003e✦ What problems does this serum solve for you?\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDull, lackluster skin that looks tired and lifeless\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eAcne marks, dark spots, and sunspots that linger\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eUsed Vitamin C products, but they quickly turned yellow and became ineffective\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eWorried about \"reverse darkening\" when using Vitamin C in the morning, so you avoid it\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eWant effective antioxidant protection against daily environmental pollution damage to the skin\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"eaa20-c\"\u003e✦ Why is EAA20 different from other Vitamin C serums?\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003e① 20% High-Concentration Ethyl Ascorbic Acid — Stable and effective next-generation Vitamin C\u003c\/strong\u003e\u003cbr\u003eTraditional Vitamin C (L-Ascorbic Acid) is prone to oxidation and yellowing; the darker the color, the more oxidation and the lower the efficacy. EAA20 uses 3-O-Ethyl Ascorbic Acid, a new-generation Vitamin C derivative with significantly improved stability. It is less likely to oxidize, ensuring that every pump maintains its brightening and antioxidant efficacy.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003e② Can be used morning and night, debunking the myth of \"Vitamin C reverse darkening\"\u003c\/strong\u003e\u003cbr\u003eMany people mistakenly believe that using Vitamin C in the morning will cause the skin to \"reverse darken.\" This phenomenon actually stems from the oxidation of traditional L-Ascorbic Acid under UV light, which produces Erythrulose—an ingredient commonly found in self-tanners, leading to a tanned-like color on the skin's surface. The Ethyl Ascorbic Acid used in EAA20 is extremely stable and does not cause this issue, making it safe and effective for morning use.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003e③ Evens skin tone, accelerates fading of dark spots and acne marks\u003c\/strong\u003e\u003cbr\u003e3-O-Ethyl Ascorbic Acid effectively inhibits Tyrosinase activity, reducing Melanin production. It targets dark spots, acne marks, and uneven skin tone caused by sun exposure, leading to a brighter and more even overall complexion with continued use.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003e④ Powerful antioxidant, fights free radicals and environmental damage\u003c\/strong\u003e\u003cbr\u003eVitamin C is one of the most important antioxidants for the skin. The high-concentration formula of EAA20 effectively neutralizes free radicals in the daily environment, including oxidative damage to the skin caused by UV, PM2.5, and pollutants, providing protection for the skin from within and without.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003e⑤ Minimalist formula, clear and transparent ingredients\u003c\/strong\u003e\u003cbr\u003eEAA20's formula is simple and direct, featuring active ingredients. It is free of alcohol, fragrance, parabens, and MIT, reducing the risk of irritation caused by unnecessary additives. This ensures your skin receives only the essential ingredients it needs, without additional burdens.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"\"\u003e✦ Benefits\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eBrightens skin tone\u003c\/strong\u003e: Inhibits melanin production, improves dullness and uneven skin tone\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eFades dark spots and acne marks\u003c\/strong\u003e: Continued use effectively reduces hyperpigmentation\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003ePowerful antioxidant\u003c\/strong\u003e: Neutralizes free radicals, protects against UV and environmental pollution damage\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eCollagen support\u003c\/strong\u003e: Vitamin C promotes Collagen synthesis, improving skin elasticity\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eStable and long-lasting\u003c\/strong\u003e: Ethyl Ascorbic Acid is resistant to oxidation, ensuring continuous efficacy\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"\"\u003e✦ Texture\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eA clear, watery serum with a light texture that is easily absorbed. It feels non-sticky and leaves no white cast, providing a refreshing and comfortable sensation on the skin. It can be layered at the beginning of your skincare routine and pairs well with other serums and moisturizers without pilling.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"\"\u003e✦ Active Ingredients\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003e3-O-Ethyl Ascorbic Acid (Ethyl Vitamin C) — 20%\u003c\/strong\u003e\u003cbr\u003eA new-generation derivative of Vitamin C, stabilized by adding an ethyl group at the 3rd carbon position of the Vitamin C molecule. This significantly enhances its antioxidant stability while retaining the core efficacies of Vitamin C, such as inhibiting Tyrosinase, promoting Collagen synthesis, and providing antioxidant benefits. Compared to traditional L-Ascorbic Acid, Ethyl Ascorbic Acid is less prone to oxidation and discoloration on the skin, offering superior user experience and efficacy stability.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"\"\u003e✦ Ingredients List\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eAqua, 3-O-Ethyl Ascorbic Acid, Tri-Sodium Citrate Dihydrate, Propanediol, Phenoxyethanol, Caprylyl Glycol, 1,2-Hexanediol, Citric Acid Monohydrate, Xanthan Gum\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"\"\u003e✦ Suitable for\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eAll skin types, including oily, dry, combination, and sensitive skin\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIndividuals with dull skin lacking radiance\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIndividuals concerned about hyperpigmentation such as dark spots, acne marks, and sunspots\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThose who have been disappointed by traditional Vitamin C products due to yellowing and oxidation\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eIndividuals who prioritize daily antioxidant protection and wish to combat environmental damage\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"\"\u003e✦ Free From Statement\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e✅ Alcohol-free\u003cbr\u003e✅ Fragrance-free\u003cbr\u003e✅ Paraben-free\u003cbr\u003e✅ MIT (Methylisothiazolinone)-free\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"\"\u003e✦ How to Use\u003c\/h2\u003e\n\u003col class=\"marker:text-quiet list-decimal pl-8\"\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eUse after cleansing morning and night\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eDispense\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1\/3 to one pump\u003c\/strong\u003e into your palm and gently press onto your face and neck\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eOnce absorbed, follow with your daily lotion or cream\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eWhen using in the morning, it is recommended to apply SPF protection to further enhance antioxidant effects\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ol\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e⚠️ Before use, it is recommended to perform a patch test behind the ear or on the inner forearm. Avoid contact with eyes and broken skin.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"qa\"\u003e✦ Formulator Q\u0026amp;A\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eQ: Why did other Vitamin C products I've used turn yellow so quickly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eA: The main weakness of traditional Vitamin C (L-Ascorbic Acid) is its extreme susceptibility to oxidation and yellowing. The darker the color, the higher the degree of oxidation and the lower the efficacy. EAA20 uses Ethyl Ascorbic Acid, a new-generation Vitamin C derivative with significantly improved stability, making it less prone to oxidation and ensuring that the product's efficacy does not diminish over time.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eQ: Can EAA20 be used in the morning?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eA: Absolutely, EAA20 is suitable for both morning and night use. Many people mistakenly believe that using Vitamin C in the morning will cause \"reverse darkening.\" However, this phenomenon actually arises from the oxidation of traditional L-Ascorbic Acid under UV light, which produces a substance called Erythrulose—a common ingredient in self-tanners, causing a tanned-like color on the skin's surface. The Ethyl Ascorbic Acid used in EAA20 is extremely stable and does not cause this issue, so you can safely use it in the morning.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eQ: Can EAA20 be used with REL1 Retinol Serum or NIA10 Oil Control Serum?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eA: Yes, they can be used together. Recommended pairing: \u003c\/p\u003e\n\u003cul class=\"marker:text-quiet list-disc pl-8\"\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eMorning\u003c\/strong\u003e: EAA20 Brightening \u0026amp; Antioxidant Serum, with sunscreen, for antioxidant and brightening effects\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eNight\u003c\/strong\u003e: REL1 Retinol Serum for anti-aging and skin renewal, or NIA10 for oil control and anti-inflammatory benefits\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eAvoid layering high-concentration Vitamin C with Retinol at the same time to maintain optimal results and reduce the risk of irritation.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eQ: How long does it take to see brightening effects from EAA20?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eA: Immediate radiance improvement is usually noticeable within\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1–2 weeks\u003c\/strong\u003e of use; significant fading of acne marks and dark spots generally requires\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4–8 weeks\u003c\/strong\u003e of continuous use. It is recommended to also use daily sun protection to prevent new hyperpigmentation and ensure longer-lasting and more noticeable brightening effects.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eQ: Is EAA20 suitable for sensitive skin?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eA: EAA20's formula is free of alcohol, fragrance, parabens, and MIT, making it generally mild. However, high-concentration Vitamin C derivatives may still cause slight irritation for some extremely sensitive skin types. It is recommended to perform a patch test before first use and start with a lower frequency of use, allowing the skin to gradually adapt.\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003ch2 class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_\u0026amp;]:clear-end text-base first:mt-0\" id=\"eaa20\"\u003e✦ Why choose EAA20?\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eVitamin C is one of the most research-backed active ingredients in skincare, yet most products on the market still use traditional formulas that are prone to oxidation and loss of efficacy. EAA20 is science-based, opting for a more stable and effective new-generation ingredient, ensuring that every pump delivers the intended results, rather than applying an oxidized liquid.\u003c\/p\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eTrue brightening starts with stable ingredients.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr class=\"bg-quiet h-px border-0\"\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eEAA20 is developed by a team of Hong Kong formulators and proudly manufactured locally in Hong Kong. Every drop of serum embodies a dedication to skincare ingredients and a commitment to your skin.\u003cbr\u003e🇭🇰\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eProudly Developed \u0026amp; Made in Hong Kong.\u003c\/em\u003e\u003c\/p\u003e","brand":"Factiv","offers":[{"title":"Default Title","offer_id":48175558623477,"sku":"FCTV-SRM-EAA20-P-30ML-A","price":300.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0768\/9207\/8325\/files\/EAA20.png?v=1779379840","url":"https:\/\/prisemall.com\/en\/products\/eaa20-vitamin-c-brightening-serum","provider":"PriseMall","version":"1.0","type":"link"}