Vitamin C, or L-ascorbic acid, is a water-soluble nutrient invaluable to skin health, functioning as a powerful antioxidant that improves skin’s radiance and resilience.
It’s impressive enough on the surface, capable of everything from brightening dull complexions to reducing the appearance of fine lines. However, Vitamin C’s magic also works at a cellular level by helping to synthesize collagen, the protein that keeps our skin firm and youthful.
In celebration of Vitamin C Day on April 4, we wanted to share why we’re such big fans of this miraculous skincare ingredient and how to maximize the benefits with complementary actives.
Antioxidant Action
One of vitamin C’s most celebrated skincare uses is its ability to neutralize free radicals. When these unstable molecules come into contact with our cells, they cause oxidative stress, which is the culprit behind many premature signs of aging, including fine lines and loss of elasticity. Antioxidants like vitamin C can donate their extra electrons to free radicals, stabilizing them and negating their ability to harm.
When used in conjunction with other actives, vitamin C can also “recharge” its antioxidant properties once it has donated electrons to free radicals.
For example, after Vitamin C neutralizes free radicals, it becomes a radical itself. But when used alongside vitamin C, they have a synergistic relationship that bolsters your skin’s ability to protect against environmental stressors like UV radiation and pollution.
Brightens & Evens Skin Tone
If you’re looking for a solution to dull, uneven skin tone, vitamin C is one of the most effective skincare actives for brightening up your complexion because it can inhibit an enzyme called tyrosinase, which is necessary for melanogenesis. When used consistently as part of your skincare routine, ascorbic acid prevents melanin pigments from depositing in the skin and fades existing hyperpigmentation, leading to a brighter, more even skin tone.
Its antioxidant abilities also come into play here. Free radicals can trigger our body’s inflammatory response, increasing melanin production to try and prevent further oxidative stress. Because vitamin C neutralizes these radicals, they’re less likely to cause inflammation in the first place, thus decreasing the chance of developing post-inflammatory hyperpigmentation.
Boosts Collagen Production
Collagen protein fibers in the middle layers of our skin—the dermis—form a matrix that supports the skin’s outer layers, giving it structure and firmness. However, with age and oxidative damage, our body’s ability to produce collagen naturally decreases, leading to skin laxity, fine lines, and wrinkles.
Our bodies need vitamin C to create these proteins, as it activates prolyl hydroxylase and lysyl hydroxylase, two enzymes responsible for stabilizing and cross-linking the collagen molecules. With ascorbic acid, you’re not only helping your collagen synthesis process stay active but also ensuring that the proteins produced are high-quality.
Works With Sunscreen to Mitigate Sun Damage
Sun exposure is one of the biggest culprits in premature aging, as UV rays generate free radicals in the skin that damage skin cells, degrade collagen fibers, and cause inflammation. Vitamin C helps your skin fend off sun-induced damage because its antioxidant activity reduces the amount of cellular damage that UV radiation can cause. It’s also shown positive benefits for limiting the DNA damage that causes skin cancers and photoaging.
But vitamin C cannot replace daily sunscreen use. Sunscreens block UV rays, preventing them from reaching your skin, which vitamin C cannot do. Instead, try applying a vitamin C serum underneath a broad-spectrum sunscreen with SPF 30 or higher to protect against UVA and UVB rays while also fighting oxidative stress.
Strengthens the Moisture Barrier
As if vitamin C didn’t already seem like a skincare superstar, it also contributes to the strength of our moisture barrier. This outermost layer of skin, known as the stratum corneum, has many important jobs, from maintaining the proper pH to preventing invading microbes from taking over, all while preventing transepidermal water loss (TEWL).
There are two ways in which vitamin C assists with hydration levels:
- Its role in collagen synthesis produces the strong, healthy skin cells necessary for an effective moisture barrier.
- Ascorbic acid also helps with ceramide synthesis. These lipid molecules form a mortar-like protective layer between skin cells that limits TEWL.
It’s especially valuable for getting your skin back on track after rejuvenation treatments. A Korean study published in Aesthetic Plastic Surgery found that after Fraxel treatments, patients who used topical vitamin C for 12 weeks starting the first day after treatment showed a significant reduction in TEWL and improved restoration of the skin’s natural pH.
The combination of improved barrier function and increased collagen production naturally plumps your skin, reduces the appearance of fine lines, and gives you a radiant, healthy, hydrated glow.
Reduces Inflammation
When our immune system detects a skin injury or irritant, it initiates inflammation to reduce the risk of infection and initiate the healing process. While this inflammatory response is natural, the damage from conditions like rosacea, psoriasis, sensitivity, and free radical damage over time can accumulate, affecting the appearance of your skin
In addition to its antioxidant defense against free radical-induced inflammation, vitamin C also slows down pro-inflammatory cytokines, immune system proteins that regulate inflammation. This property makes ascorbic acid especially beneficial for those with severe, chronic acne, as it eases swelling and discomfort while preventing dark spots, reducing the severity of post-inflammatory hyperpigmentation.
Find Your Perfect Vitamin C Pairings at Advanced Skin Therapeutics
If you’re in the market for vitamin C skincare, there are no better skincare experts to work with than those at AST. Our range of dermatologist-approved, medical-grade products are clinically tested for efficacy and often combine complementary actives to help you meet your skin goals.
When you stop by to shop, ask about recommendations with formulations that combine ascorbic acid with the following:
- Vitamin E enhances vitamin C’s antioxidant effect and extends its shelf life. Together, they provide enhanced protection against free radicals and oxidative stress.
- Ferulic acid, like vitamin E, increases the stability and effectiveness of Vitamin C. It’s particularly good at preventing sun-induced damage.
- Hyaluronic acid is excellent for hydration. It provides intensive moisture that pairs well with vitamin C’s ability to strengthen the skin barrier.
- Peptides can be combined with vitamin C to enhance collagen production even further. Peptides signal that it’s time to produce more collagen, while vitamin C ensures the proteins are strong and stable.
- SPF in your morning routine is an absolute non-negotiable. Pair with vitamin C for double defense against UV ray damage.
Happy Vitamin C Day! We look forward to helping you achieve the skin you’ve been dreaming of!
