Vitamin C is a cornerstone of modern skincare for good reason: it’s clinically proven to brighten skin, support collagen production, and defend against environmental oxidative stress. But among the many forms of vitamin C used in cosmetics, L-ascorbic acid stands alone as the most biologically active—and the most challenging to formulate.
What Makes L-Ascorbic Acid Superior?
As the chemically identical form of vitamin C found in the human body, L-ascorbic acid requires no conversion by the skin. Its low molecular weight (176.12 Da) and optimal activity at a pH of ~3.5 allow it to penetrate effectively into the epidermis, where it:
• Acts as a cofactor in collagen synthesis
• Inhibits tyrosinase, helping to fade hyperpigmentation
• Neutralizes free radicals caused by UV light and pollution
Unlike stabilized derivatives such as magnesium ascorbyl phosphate or ascorbyl glucoside—which must be enzymatically converted into L-ascorbic acid within the skin, often inefficiently—L-ascorbic acid works directly and immediately.
The Challenge of Stability
Despite its efficacy, L-ascorbic acid is notoriously unstable. It rapidly degrades when exposed to light, air, or water—losing potency and potentially generating irritating byproducts. This instability is why many mass-market brands avoid it or rely on derivatives that trade performance for shelf life.
Luksha’s Advanced Solution
At Luksha, we’ve taken a different path. Our Intensive Brightening Serum delivers 15% pure L-ascorbic acid in a formulation designed for maximum freshness and potency. To preserve the integrity of this powerful antioxidant, we produce the serum seasonally in small batches, ensuring each unit reaches the customer with optimal activity.
Do you know any other brand that approaches skincare with such precision and dedication to quality?
It’s labor-intensive, yes—but our passion for efficacy and integrity makes it worth it.
This approach allows Luksha to offer what many cannot: the true efficacy of clinical-grade vitamin C, uncompromised by mass-production shortcuts.
The Result?
A high-performance, scientifically sound vitamin C serum - Intensive Brightening Serum from Luksha laboratory - that delivers:
• Visible brightness
• Enhanced skin resilience
• Long-term dermal support
Science. Freshness. Efficacy. That’s the Luksha difference.
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Use of topical ascorbic acid and its effects on photodamaged skin topography.
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4. Darr D, Combs S, Dunston S, Manning T, Pinnell S. (1996).
Topical vitamin C protects porcine skin from ultraviolet radiation-induced damage.
British Journal of Dermatology, 135(4), 688–694.
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Topical vitamin C: a useful agent for treating photoaging and other dermatologic conditions.
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The roles of vitamin C in skin health.
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