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Vitamin C

Description

Vitamin C, also known as ascorbic acid, is a potent antioxidant and essential nutrient vital for skin health. This water-soluble vitamin plays a crucial role in collagen synthesis, which is fundamental for maintaining skin elasticity and firmness. Topical application of vitamin C has gained significant popularity in skincare due to its multifaceted benefits.

When formulated correctly, vitamin C can effectively neutralize free radicals, protect against UV-induced photodamage, and inhibit melanin production, leading to a more even skin tone and reduced hyperpigmentation. It also demonstrates anti-inflammatory properties, potentially benefiting conditions like acne and rosacea.

The most commonly used and studied form in skincare is L-ascorbic acid, which is highly unstable and prone to oxidation. To enhance stability, derivatives such as ascorbyl palmitate, magnesium ascorbyl phosphate, and sodium ascorbyl phosphate are often utilized. These forms offer improved shelf-life and may be gentler on sensitive skin.

Optimal concentration for skincare products typically ranges from 10-20% for L-ascorbic acid, with lower concentrations for derivatives. Vitamin C is most effective when formulated at a low pH (around 3.5) and should be stored in opaque, airtight containers to maintain potency.