Silymarin CF

SkinCeuticals Silymarin CF is a breakthrough oil-free vitamin C serum formulated specifically for oily and blemish-prone skin. Combining 15% L-ascorbic acid, 0.5% silymarin (milk thistle extract), 0.5% ferulic acid, and 0.5% salicylic acid, this first-of-its-kind formula is clinically demonstrated to reduce oil oxidation by up to 76% — addressing the root cause of blemish formation while simultaneously delivering advanced antioxidant protection, reducing oiliness, refining skin texture, and visibly improving skin clarity and fine lines.

Formulated under the Duke Antioxidant patent, Silymarin CF is the only vitamin C antioxidant serum in the SkinCeuticals range designed specifically for oily and combination skin prone to breakouts. Its oil-free formula provides the full anti-aging and environmental protection benefits of a high-concentration vitamin C serum without contributing to excess shine or congestion — making it the definitive daily antioxidant treatment for skin that has historically struggled to find a vitamin C serum compatible with its needs.

Skin Types

Formulated exclusively for oily and combination skin types prone to blemishes. Its oil-free formula delivers effective antioxidant protection and anti-aging correction without contributing to excess shine, congestion, or breakouts — addressing a gap that standard vitamin C serums, which are often formulated in oil-based or richer bases, cannot fill for this skin type.

Skin Concerns

Targets acne and blemish formation driven by oil oxidation, excess oiliness, enlarged pores, uneven skin texture, and visible signs of aging including fine lines and dullness. Ideal for oily and combination skin seeking a single daily serum that addresses both blemish prevention and anti-aging correction simultaneously.

Benefits

• Clinically demonstrated to reduce oil oxidation by up to 76% — addressing the root cause of blemish formation
• Provides advanced antioxidant protection from UV, pollution, and other environmental aggressors
• Helps prevent the cycle of inflammation and bacteria linked to blemish formation
• Reduces oiliness and controls excess sebum for a more balanced complexion
• Minimizes pore appearance and refines skin texture
• Improves skin clarity, radiance, and uneven skin tone
• Visibly improves the appearance of fine lines with continued daily use
• Oil-free formula — no heaviness, shine, or pore congestion

Key Ingredients

• 15% L-Ascorbic Acid (Pure Vitamin C) — The most bioavailable and potent form of vitamin C, formulated at 15% under the Duke Antioxidant patent for optimal skin penetration and efficacy. L-ascorbic acid neutralizes free radicals, protects against oxidative stress, and delivers visible anti-aging and brightening benefits — including improvements in fine lines, wrinkles, and skin radiance — with consistent daily use.
• 0.5% Silymarin (Milk Thistle Extract) — A powerful plant-based antioxidant derived from milk thistle that is the cornerstone of this formula’s blemish-prevention action. Silymarin specifically targets oil oxidation — the process by which skin’s natural oils are damaged by free radicals, triggering the inflammatory cascade linked to blemish formation. By preventing oil oxidation, silymarin helps break the cycle of inflammation and bacteria that leads to breakouts, while also providing broad antioxidant protection against environmental free radical damage.
• 0.5% Ferulic Acid — A plant-based antioxidant that neutralizes free radicals while simultaneously enhancing the antioxidant benefits and photostability of vitamin C. Ferulic acid amplifies the protective efficacy of L-ascorbic acid, ensuring sustained, reliable antioxidant protection throughout the day.
• 0.5% Salicylic Acid — A beta-hydroxy acid (BHA) that is oil-soluble, allowing it to penetrate into the pore and dissolve the sebum and debris that cause congestion and breakouts. Salicylic acid provides effective exfoliation, refines the appearance of pores, and helps reduce the formation of blemishes — complementing silymarin’s oil oxidation prevention with direct pore-clearing action.

The Science Behind It

Growing research shows a causative link between oil oxidation and the formation of blemishes. When the skin’s natural oils are oxidized by free radicals generated by UV exposure and pollution, this specific type of oxidative damage triggers a cycle of inflammation and bacterial activity that is directly linked to blemish formation. Standard antioxidant serums address environmental free radical damage broadly, but do not specifically target the oxidation of skin oils — leaving oily and blemish-prone skin inadequately protected against this key driver of breakouts.

Silymarin CF was developed to address this gap. By combining silymarin’s targeted oil oxidation prevention with the broad antioxidant protection of vitamin C and ferulic acid, and the pore-refining action of salicylic acid, it delivers a comprehensive, multi-mechanism approach to both blemish prevention and anti-aging correction in a single oil-free daily serum. Formulated under the Duke Antioxidant patent, it meets the exacting parameters required for effective vitamin C delivery to skin.

How to Use

Each morning after cleansing and toning, apply 4–5 drops of Silymarin CF to a dry face, neck, and chest before other skincare products. Allow to absorb fully before applying moisturizer and sunscreen. Complete your regimen with a SkinCeuticals broad-spectrum sunscreen — when used together, SkinCeuticals antioxidants and sunscreens provide the most comprehensive protection against visible aging caused by environmental aggressors.