SkinCeuticals Serum 10 AOX+ | Vitamin C Serum | 30ml

Additional Product Information

Size: 30ml
Texture: Lightweight, fast-absorbing, non-oily aqueous serum
Skin Type Suitability: All skin types including sensitive, normal, dry, combination, oily, and mature skin
Clinical Testing: Formulated under the Duke Antioxidant Patent with pH 2.0-3.5 for optimal vitamin C absorption
Free-From Claims: Paraben-free, fragrance-free, phthalate-free, non-comedogenic
Packaging: Amber glass bottle with dropper dispenser to protect formulation stability

Special Notes

Formulation Standards: Developed under the Duke Antioxidant Patent by Dr. Sheldon Pinnell, ensuring pure L-ascorbic acid at optimal pH 2.0-3.5 for maximum skin absorption
Stability: 36 months shelf life in sealed packaging; 6 months after opening with proven effectiveness maintained
Colour Change: Normal for L-ascorbic acid to darken over time due to oxidation; efficacy remains intact
Optimal Usage Window: For best results, use within 3 months of opening
Unique Features: SkinCeuticals is the only brand formulating vitamin C serums according to Duke Antioxidant Patent parameters

How To Use

Application: Apply 4-5 drops to clean, dry skin in the morning after cleansing and toning. Gently press into face, neck, and chest. May also be applied to backs of hands for additional antioxidant protection.
Frequency: Once daily in the morning
Timing: Apply before all other skincare products, allowing serum to absorb fully before proceeding with moisturiser and sunscreen
Layering: Follow with a SkinCeuticals moisturiser appropriate for your skin type and finish with broad-spectrum sunscreen SPF 50 for comprehensive protection. When used together, SkinCeuticals antioxidants and sunscreens provide enhanced defence against visible ageing caused by environmental aggressors.
Expert Tips: For external use only. Avoid direct contact with eyes. Once absorbed, the serum remains effective for minimum 72 hours and cannot be washed off. After building tolerance, you may progress to higher vitamin C concentrations such as C E Ferulic (15% vitamin C).

Full Ingredients List

Aqua / Water / Eau, Ascorbic Acid, Ethoxydiglycol, Propylene Glycol, Glycerin, Zinc Sulfate, Phenoxyethanol, Panthenol, Ferulic Acid, Sodium Hyaluronate, Sodium Hydroxide

Please note: Formulations are updated periodically by manufacturers without notice. Therefore, the ingredient lists on this website may differ from the product packaging depending on the time and country of purchase. Please refer to your product packaging for accurate ingredient lists. A patch test before use must be carried out for suitability.

FAQ

Q: Is SkinCeuticals Serum 10 AOX+ suitable for sensitive skin?
A: Yes, Serum 10 AOX+ is specifically formulated as an ideal introductory vitamin C serum for sensitive skin or those new to antioxidant therapy. The 10% L-ascorbic acid concentration provides clinical efficacy whilst maintaining excellent tolerability. However, as with any new skincare product, we recommend performing a patch test before first use.

Q: Why is this serum formulated under the Duke Antioxidant Patent?
A: The Duke Antioxidant Patent, developed by Dr. Sheldon Pinnell, establishes the precise scientific parameters required for effective topical vitamin C delivery: pure L-ascorbic acid at pH 2.0-3.5 with a concentration of 10-20%. SkinCeuticals is the only brand formulating according to these validated specifications, ensuring optimal skin absorption and maximum antioxidant efficacy. This patent represents decades of dermatological research and clinical validation.

Q: How long does it take to see results with Serum 10 AOX+?
A: Environmental protection begins immediately upon application, with the serum remaining active for minimum 72 hours. Visible improvements in skin radiance and texture typically appear within 4-6 weeks of consistent daily use. Reduction in fine lines, wrinkles, and improvement in overall skin firmness generally become apparent after 8-12 weeks of continued application. Individual results may vary based on skin condition and environmental factors.

Q: Can I use Serum 10 AOX+ with other SkinCeuticals products?
A: Yes, Serum 10 AOX+ integrates seamlessly into comprehensive SkinCeuticals regimens. Apply after cleansing and toning, before moisturizer and sunscreen. It works synergistically with SkinCeuticals sunscreens to provide enhanced environmental protection. For personalized guidance on building your optimal regimen, speak to our skincare experts.

Q: Why does my serum appear to have darkened in colour?
A: L-ascorbic acid naturally undergoes oxidation when exposed to air and light, causing the serum to darken from clear to amber over time. This colour change is normal and does not affect the product's efficacy. All SkinCeuticals antioxidant formulations have been tested and confirmed to remain stable and effective for 36 months in sealed packaging and up to 6 months after opening. For optimal results, we recommend using within 3 months of opening.

Q: Can I progress to a higher vitamin C concentration after using Serum 10 AOX+?
A: Absolutely. Serum 10 AOX+ serves as an excellent foundation for building tolerance to vitamin C. Once your skin demonstrates comfortable tolerance to the 10% concentration, you may progress to SkinCeuticals C E Ferulic with 15% vitamin C, 1% vitamin E, and 0.5% ferulic acid for enhanced anti-ageing benefits. Speak to our skincare experts for personalised recommendations.