Mirai Skin Reviews

My Guide to the Best Vitamin C Serums What They Do and Which Ones Are Worth It

Let’s talk about vitamin C serum not the kind you take as a supplement, but the kind that goes directly on your face. A vitamin C has become one of the most important products in my skincare routine, and honestly? I wish I had started using it sooner.Over the past year, I’ve tried several vitamin C serums some stronger, some more gentle and I’ve learned what actually works for my skin. In this guide, I’ll break down what a good serum does, how to use it, and which ones are really worth your time (and money). Why Vitamin C Belongs in Your RoutineA vitamin C can help with: Brightening dull skin Fading dark spots and acne marks Evening out skin tone Protecting against pollution and sun damage (when used with SPF) Supporting collagen production for firmer-looking skin It’s like giving your skin a healthy morning smoothie  packed with antioxidants that make everything look fresher and more alive.Now let’s get into the products. These are some of the best vitamin C serums I’ve used, and here’s exactly what I think about each one.COSRX The Vitamin C 23 Serum (20ml)This serum is a powerhouse. With 23% pure ascorbic acid, it delivers one of the highest concentrations of vitamin C on the market  and you can feel it. The texture is watery but slightly oily, and it absorbs quickly into the skin. You’ll probably feel a light tingling sensation on the first few uses, especially if your skin isn’t used to high-strength actives.What I love: It gives a visible glow within a few days Helps fade post acne scars and pigmentation Contains vitamin E and hyaluronic acid for added hydration Tips: Keep it in the fridge to slow down oxidation, and always follow with sunscreen. This one is great for experienced users or anyone who wants fast, visible results. {"dataProduct":{"id":"gid://shopify/Product/14676010566004","title":"COSRX The Vitamin C 23 Serum 20ml","currencyCode":"USD","amountMax":"22.0","amountMin":"22.0","price":"22.00","compareAtPrice":null,"imagesUrl":"https://cdn.shopify.com/s/files/1/0899/8862/8852/files/product_images_1681904789.301866060_add1_AJ127271740061961.jpg?v=1747657085&width=600","urlStore":"https://mirai-skin.com/products/cosrx-the-vitamin-c-23-serum-20ml","altImage":""},"isHidePrice":false,"isHideVariant":false,"isHideDescription":true,"labelButton":"Buy now","ATCLabelButton":"Add to cart","locale":"en","colorTitleProduct":{"hue":0,"saturation":0,"brightness":0},"colorBNButton":{"hue":0,"saturation":0,"brightness":1},"colorATCButton":{"hue":145.6,"saturation":0.378,"brightness":0.341},"colorBNText":{"hue":0,"saturation":0,"brightness":0},"colorPrice":{"hue":0,"saturation":0,"brightness":0},"colorATCText":{"hue":0,"saturation":0,"brightness":1},"id":"Avada-Tool_ProductDetail-2","hidden":false,"locked":false,"blockName":"Product details"} Add to cart Buy now innisfree Green Tea Enzyme Vitamin C Brightening Serum (30ml)This is the one I reach for when my skin feels tired, dull, or slightly sensitive. It’s made with Jeju green tea enzymes that help gently exfoliate the skin while delivering a stable form of vitamin C. The formula is lightweight, almost gel like, and layers well under makeup.What I love: Gentle enough for everyday use Smells fresh and natural Works well for people new to vitamin C It doesn’t sting, it doesn’t pill, and it gives my skin a soft glow after about a week of use. I’d call this the best all rounder. {"dataProduct":{"id":"gid://shopify/Product/14678005907828","title":"innisfree Green Tea Enzyme Vitamin C Brightening Serum 30ml","currencyCode":"USD","amountMax":"27.0","amountMin":"27.0","price":"27.00","compareAtPrice":null,"imagesUrl":"https://cdn.shopify.com/s/files/1/0899/8862/8852/files/product_images_1732283869.IF_GT-VCS_Packshot_2024_01_1080x1080_780f9363-b297-42b0-b82c-b90143b0e5e41741099866.jpg?v=1747657944&width=600","urlStore":"https://mirai-skin.com/products/innisfree-green-tea-enzyme-vitamin-c-brightening-serum-30ml","altImage":""},"isHidePrice":false,"isHideVariant":false,"isHideDescription":true,"labelButton":"Buy now","ATCLabelButton":"Add to cart","locale":"en","colorTitleProduct":{"hue":0,"saturation":0,"brightness":0},"colorBNButton":{"hue":0,"saturation":0,"brightness":1},"colorATCButton":{"hue":145.6,"saturation":0.378,"brightness":0.341},"colorBNText":{"hue":0,"saturation":0,"brightness":0},"colorPrice":{"hue":0,"saturation":0,"brightness":0},"colorATCText":{"hue":0,"saturation":0,"brightness":1},"id":"Avada-Tool_ProductDetail-3","hidden":false,"locked":false,"blockName":"Product details"} Add to cart Buy now SOME BY MI Galactomyces Pure Vitamin C Glow Serum (30ml)If you’re into K-beauty, you’ve probably heard of galactomyces  a fermented ingredient that helps with texture, tone, and elasticity. This serum combines it with vitamin C for a two-in-one punch: it brightens while also refining your pores and smoothing the skin.What I love: Brightens and smooths at the same time Helps with uneven skin tone and dullness Doesn’t oxidize quickly like other serums The texture is slightly thicker, and it feels like a treatment. It’s perfect for skin that looks uneven or congested. {"dataProduct":{"id":"gid://shopify/Product/14662117884276","title":"SOME BY MI Galactomyces Pure Vitamin C Glow Serum 30ml","currencyCode":"USD","amountMax":"25.0","amountMin":"25.0","price":"25.00","compareAtPrice":null,"imagesUrl":"https://cdn.shopify.com/s/files/1/0899/8862/8852/files/product_images_1623152357.cb0560f238c5b2698b1f731bac6f50661739282204.jpg?v=1747734271&width=600","urlStore":"https://mirai-skin.com/products/some-by-mi-galactomyces-pure-vitamin-c-glow-serum-30ml","altImage":""},"isHidePrice":false,"isHideVariant":false,"isHideDescription":true,"labelButton":"Buy now","ATCLabelButton":"Add to cart","locale":"en","colorTitleProduct":{"hue":0,"saturation":0,"brightness":0},"colorBNButton":{"hue":0,"saturation":0,"brightness":1},"colorATCButton":{"hue":145.6,"saturation":0.378,"brightness":0.341},"colorBNText":{"hue":0,"saturation":0,"brightness":0},"colorPrice":{"hue":0,"saturation":0,"brightness":0},"colorATCText":{"hue":0,"saturation":0,"brightness":1},"id":"Avada-Tool_ProductDetail-4","hidden":false,"locked":false,"blockName":"Product details"} Add to cart Buy now I’m From Vitamin Fruit Serum (30ml)This one stands out because it’s not just about vitamin C  it’s about feeding your skin a full mix of natural antioxidants. Made with 74% vitamin rich fruit extracts, especially sea buckthorn, this serum feels nourishing and soothing. The texture is slightly oily but absorbs beautifully.What I love: Natural and plant-based formula Adds glow without irritation Great for dry or stressed skin This is the serum I use when I want results and comfort. It’s not as strong as the COSRX one, but it’s reliable and kind to my skin.How to Use a Vitamin C Serum (Without Wasting It) Use it in the morning after cleansing and before moisturizer. Apply to clean, dry skin  2 3 drops are enough. Follow with SPF  vitamin C + sunscreen = the ultimate protection team. Start slowly  2 3 times a week, then build up to daily use. Final ThoughtsA good serum isn’t just a trend it’s one of the best ways to keep your skin looking bright, even, and protected. Whether you’re looking for fast results (hello COSRX), something soothing (like I’m From), or a gentle daily booster (innisfree), there’s a formula that can work for your skin.I always say this: consistency matters more than price. Find a serum that works for your skin type, use it regularly, and you’ll start to see that natural glow.For more info you can DM us on our Instagram