Why do most Vitamin C serums on the market fail to lighten dark spots or brighten skin? For Vitamin C to effectively lighten dark spots and brighten the skin, it needs to penetrate deep into the epidermis to inhibit the enzyme tyrosinase, which causes pigmentation issues (According to Lab Muffin Beauty Science). Currently, there are two types of Vitamin C serums available: pure Vitamin C and derivative Vitamin C.
Pure Vitamin C vs. Derivative Vitamin C: Pure Vitamin C is highly effective but less stable, which is why many companies convert Vitamin C into a derivative form for better shelf life. However, derivative Vitamin C must be converted into pure Vitamin C on the skin to work, and there is no concrete evidence that all derivative forms can achieve this. Therefore, it’s best to choose pure Vitamin C for guaranteed results.
Why should you add Vitamin C Serum to your skincare routine?
– Brightens Skin: Vitamin C helps even out skin tone and enhances radiance by reducing pigmentation.
– Fades Dark Spots: Regular use diminishes acne scars, age spots, and sun damage, revealing a more even complexion.
– Boosts Collagen Production: Vitamin C stimulates collagen, helping to reduce fine lines and wrinkles, leading to firmer skin.
– Improves Skin Texture: It smooths and softens the skin, promoting a glowing and healthy complexion.
The pure Vitamin C that I want to recommend today is DearKlairs’ Vitamin C. DearKlairs is a popular Korean skincare brand known for its focus on simple, effective, and cruelty-free products suitable for sensitive skin. Their formulations emphasize high-quality, gentle ingredients that nourish and protect the skin without irritation. DearKlairs’ Vitamin C serum, part of their best-selling line, exemplifies this philosophy by offering a potent yet gentle treatment for improving skin tone and texture.

About DearKlairs Vitamin C Serum:
– Active Ingredient: 5% pure Vitamin C
– Advantages: Contains pure Vitamin C and powerful antioxidants. With a 5% concentration, it’s ideal for sensitive skin or those new to Vitamin C. The serum also offers excellent hydration.
– Disadvantages: The packaging is visually appealing, but the transparent plastic bottle makes the product prone to oxidation. For people with oily skin, applying this serum before sunscreen may increase oiliness, especially in summer, so it’s better suited for normal to dry skin types.
The texture feels like oil-based water, and it warms the skin when applied. After about 5-7 minutes, the serum fully absorbs.
In my personal experience, after using DearKlairs’ Vitamin C serum, I noticed a significant reduction in dark spots caused by acne within two weeks. The product is gentle and doesn’t irritate the skin, making it a great choice for sensitive skin types.
A tip for applying Vitamin C to acne-prone skin is that instead of applying it all over the face, apply it only to the areas where you need to fade dark spots.
Another thing to note is to always use sunscreen during the day when incorporating Vitamin C into your routine, as it increases the skin’s sensitivity to the sun.
Disclosure: Some of the links below are Amazon affiliate links. This means that, at zero cost to you, I will earn an affiliate commission if you click through the link and finalize a purchase.