Comparison of Vitamin C E Ferulic and Vitamin C Repair Serum

Based on the ingredients used, the key difference between Vitamin C E Ferulic and Vitamin C Repair Serum lies in the type of Vitamin C they contain, which affects their properties and how they work on the skin.

Vitamin C E Ferulic

This formula primarily uses L-Ascorbic Acid. L-Ascorbic Acid is considered the most potent form of Vitamin C because the skin can absorb and utilize it directly without conversion. It is highly effective for:

• Brightening skin tone
• Reducing wrinkles
• Stimulating collagen production
• Providing antioxidant protection

However, L-Ascorbic Acid is inherently unstable, especially when dissolved in water. The Vitamin C E Ferulic formula uses Vitamin E and Ferulic Acid to help stabilize the L-Ascorbic Acid. Formulations with L-Ascorbic Acid typically require a low pH (acidic environment) for stability and optimal absorption.

Vitamin C Repair Serum

This formula uses Perfect-C™ (Ascorbyl Tetraisopalmitate). This is an oil-soluble derivative of Vitamin C. Perfect-C™ is known for being highly stable and having excellent absorption into the skin because it is oil-based, allowing it to penetrate the lipid-rich layers of the skin effectively. Its benefits are comparable to L-Ascorbic Acid, including:

• Whitening and brightening skin tone
• Reducing wrinkles (anti-oxidant effect)
• Stimulating collagen synthesis
• Providing antioxidant protection

Perfect-C™ is significantly more stable than L-Ascorbic Acid and can be formulated at a higher pH (typically 5.0-5.5), which is closer to the skin's natural pH and generally less irritating.

Efficacy and Suitability for Acne-Prone Skin

• Efficacy: Both forms are effective Vitamin C derivatives offering similar core benefits (brightening, anti-aging, antioxidant). L-Ascorbic Acid is often considered the gold standard for potency but requires careful formulation due to instability and low pH. Perfect-C™ offers comparable efficacy with superior stability and better skin absorption, potentially making it more effective in reaching target skin layers.
• Acne-Prone Skin: Suitability depends on individual skin sensitivity. L-Ascorbic Acid's requirement for a low pH can sometimes cause irritation, stinging, or redness, which might aggravate active acne or sensitive skin. Perfect-C™, being formulated at a higher, more skin-friendly pH, is generally considered less irritating. However, as an oil-soluble ingredient, the overall formulation base should be considered to ensure it is non-comedogenic if you have acne-prone skin. It is highly recommended to patch test any new product, especially if you have active acne or sensitive skin. Trying both formulas yourself, as suggested by the staff and another user, is the best way to see how your skin reacts.

Vitamin C Repair Serum Details

• Shelf Life: Perfect-C™ (Ascorbyl Tetraisopalmitate) is highly stable. In a finished formula, it can be stable for at least 24 months. When stored correctly (e.g., in a refrigerator at 5°C, away from light), the raw ingredient can last at least 3 years.
• Branding: Yes, the formula for Vitamin C Repair Serum demonstrated by MySkinRecipes is not copyrighted, and you are free to use it as a base for your own brand or products.
• Ingredient Purchase: MySkinRecipes sells ingredients individually, not as pre-packaged kits for specific formulas like the Vitamin C Repair Serum. You need to purchase each required ingredient separately based on the formula's requirements and the quantity you wish to make. The ingredients and available sizes are listed on the website.

In summary, the choice between the two serums depends on your skin's tolerance for low pH (L-Ascorbic Acid) versus your preference for a highly stable, well-absorbing oil-soluble form (Perfect-C™). Both offer significant benefits. For acne-prone skin, Perfect-C™ might be less irritating due to its higher pH, but patch testing is crucial.