SkinCeuticals C E Ferulic® Vitamin C Serum — Advanced Antioxidant Protection for Radiant, Firm, Youthful Skin

Product Overview

SkinCeuticals C E Ferulic is a synergistic antioxidant serum developed through research at Duke University Medical Center under the direction of Dr. Sheldon R. Pinnell, MD. The formulation delivers pure L-ascorbic acid (vitamin C) at 15% concentration alongside alpha tocopherol (vitamin E) at 1% and ferulic acid at 0.5%. The acidic delivery vehicle (pH 2.2–3.5) maintains ascorbic acid in its biologically active, reduced form and facilitates penetration across the stratum corneum into viable epidermis and dermis. Duke University holds the foundational patent for this stable aqueous antioxidant combination, licensed to SkinCeuticals.

Topical application prior to sunscreen provides a second line of defence against UV-induced reactive oxygen species (ROS) and free radical cascades. L-ascorbic acid functions as a direct electron donor to neutralise superoxide, hydroxyl, and peroxyl radicals. Alpha tocopherol replenishes oxidised vitamin C and provides lipophilic antioxidant activity within cell membranes. Ferulic acid, a plant-derived phenolic compound, further stabilises both vitamins C and E against photodegradation while contributing independent radical-scavenging activity — an effect documented in peer-reviewed photobiology literature.

Specifications

Key Applications

• Photoaged skin management: Daily topical antioxidant application to counteract cumulative UV-induced collagen degradation, elastin disruption, and matrix metalloproteinase (MMP) upregulation in chronically sun-exposed Singapore residents.
• Post-procedure adjunct: Clinician-recommended post-laser, post-chemical peel, and post-microneedling antioxidant support to reduce procedural oxidative stress and promote fibroblast-mediated collagen remodelling.
• Hyperpigmentation control: Tyrosinase inhibition by L-ascorbic acid reduces melanin synthesis and assists management of post-inflammatory hyperpigmentation (PIH), solar lentigines, and melasma in conjunction with medical treatment protocols.
• Preventive antioxidant coverage in high-pollution environments: Neutralisation of ROS generated by urban air pollutants (ozone, diesel particulate matter), relevant for Singapore's high-UV, high-humidity equatorial climate.
• Collagen synthesis support: Vitamin C acts as obligatory cofactor for prolyl and lysyl hydroxylase enzymes responsible for hydroxylation of procollagen chains, supporting Type I and Type III collagen cross-linking and extracellular matrix stability.
• Adjunctive photoprotection: Used in conjunction with broad-spectrum SPF 30+ sunscreen as part of a dual antioxidant photoprotection strategy per evidence-based dermatology practice.

Frequently Asked Questions

Q: Why must C E Ferulic be applied in the morning rather than at night?
A: The formulation is designed to be in place on the skin before UV and environmental oxidant exposure occurs. Antioxidants neutralise ROS at the point of generation; applying the serum at night provides no meaningful protection against daytime oxidative insults. Duke University photobiology research confirms that topical application prior to UV exposure significantly attenuates UV-induced oxidative DNA damage and immunosuppression.

Q: Is there a risk of skin irritation from the low-pH acidic formulation in Singapore's humid climate?
A: L-ascorbic acid at 15% and pH 2.2–3.5 may cause transient tingling or mild erythema in barrier-compromised or sensitive skin, particularly in humid conditions. A slow introduction protocol is recommended: apply every other day for two weeks, then daily once tolerance is established. Patients with rosacea, eczema, or active barrier disruption should consult a dermatologist before initiating use.

Q: How should C E Ferulic be layered with prescription topicals such as tretinoin or hydroquinone?
A: C E Ferulic is applied in the morning; tretinoin and hydroquinone are typically prescribed for nocturnal use to avoid photosensitisation. This temporal separation eliminates formulation interaction risks. If a clinician prescribes daytime hydroquinone, application of C E Ferulic should precede it after a one-to-two-minute absorption window.

Q: How is this product regulated and sourced in Singapore?
A: SkinCeuticals C E Ferulic is classified as a cosmetic product under the Singapore Health Products Act (Cap. 122D) and the Health Products (Cosmetic Products — ASEAN Cosmetic Directive) Regulations 2007, administered by the Health Sciences Authority (HSA). EMIS sources authentic product through authorised distributor channels. Clinics and aesthetic medicine practices should retain distributor invoices and HSA notification records for compliance documentation.

Q: What is the expected shelf life and how does oxidation affect efficacy?
A: Unopened product: 24 months from manufacture date when stored below 25°C away from light and air. Once opened, use within 3–6 months. L-ascorbic acid oxidises progressively; a solution that changes from pale straw-yellow to orange or brown has undergone significant oxidation, substantially reducing antioxidant efficacy. Oxidised product should be discarded.

Available in Singapore from EMIS (Essential Medical International Supplies Pte Ltd). For professional procurement enquiries, contact our B2B team at emis.asia.