DermaQuest C Infusion

Vitamin C skincare for radiant and healthy skin

The DermaQuest C Infusion line is developed for any skin that has lost its natural glow and needs deep antioxidant protection. The combination of stable vitamin C, peptides, and plant-based antioxidants in this collection targets photo damage, pigmentation spots, fine lines, and dull skin.

Vitamin C is one of the most well-researched ingredients in modern skincare. It neutralizes free radicals caused by UV radiation, pollution, and blue light, reduces the visibility of pigmentation spots, and stimulates natural collagen production. For skin that looks tired, dull, or uneven, a structured vitamin C routine is a scientifically proven approach.

Why choose DermaQuest C Infusion?

DermaQuest is an American cosmeceutical brand from California with over 25 years of experience in clinical skincare. The C Infusion collection stands out by using THD Ascorbate (BV-OSC), the most stable and oil-permeable form of vitamin C that penetrates deeper into the skin than classic ascorbic acid. For those who want the pure power of L-ascorbic acid, there are separate serums with 8% stabilized ascorbic acid combined with ferulic acid or phytic acid.

The products are cosmeceutically formulated, meaning they work in the deeper skin layers to stimulate natural skin processes. Clinical research showed that 100% of users of the Advanced C Infusion Moisturizer experienced more hydrated, healthier-looking, and firmer-feeling skin after four weeks.

Find your ideal vitamin C routine

A complete vitamin C routine starts with cleansing and ends with targeted care for the most sensitive areas of the face. The DermaQuest C Infusion Cleanser thoroughly cleanses without drying out the skin barrier and immediately delivers a first layer of antioxidants.

For daily antioxidant protection, choose between two powerful serums with 8% pure L-ascorbic acid. The Ferulic Infusion + C Serum combines vitamin C with ferulic acid and vitamin E for a rich, nourishing effect — ideal for dry or mature skin. The Phytic Infusion + C Serum contains phytic acid, tannic acid, and ginkgo biloba for skin-evening and sebum-regulating effects, perfect for oily or combination skin.

For extra support of the skin barrier, the Advanced B5 with Ferulic Acid is a lightweight hydrating serum that contains vitamin B5, hyaluronic acid, and ferulic acid for antioxidant protection.

The right care for every area

The Advanced C Infusion Moisturizer delivers 10% THD Ascorbate combined with orange stem cells and peptides in a fast-absorbing texture, finishing the routine with deep hydration and antioxidant protection.

Specifically for the eye contour, the C Infusion Eye Cream was developed, with Eyeliss against puffiness, hesperidin for dark circles, and peptides for visibly fewer fine lines. The C Infusion Lip Hydrator intensely hydrates the lips and also provides daily UV protection thanks to broad-spectrum UV filters.

As a weekly intensive boost, the C Infusion TX Mask with four different forms of vitamin C, peptides, and hyaluronic acid microspheres provides an instantly radiant and visibly firmer skin appearance.

How to use a vitamin C routine

1. Cleanse your face morning and evening with the C Infusion Cleanser
2. Apply a C Infusion serum in the morning for antioxidant protection throughout the day
3. Follow with the Advanced C Infusion Moisturizer for hydration and collagen stimulation
4. Care for the eye contour and lips with the targeted products from the line
5. Always finish with sun protection in the morning, as vitamin C works best combined with daily SPF
6. Use the TX Mask weekly as an intensive boost for extra radiance and firmness

Frequently asked questions about vitamin C skincare

At what age can I start using vitamin C skincare?

Vitamin C is suitable from the age of twenty as preventive protection against environmental stress and the first signs of photoaging. For pigmentation spots, dull skin, or visible sun damage, vitamin C can be started at any age, including mature skin.

What is the difference between THD Ascorbate and pure ascorbic acid?

THD Ascorbate (BV-OSC) is an oil-permeable, stable form of vitamin C that penetrates deeper into the skin layers and does not require a low pH to be active. Pure L-ascorbic acid is biologically very active and delivers quick results but only works at a low pH and can cause slight tingling on sensitive skin. Both forms deliver results but work in different ways.

Can I combine vitamin C with retinol or niacinamide?

Vitamin C and retinol can be combined well by separating them in the routine: vitamin C in the morning for daytime protection, retinol in the evening for cellular renewal. Vitamin C and niacinamide can be used together in the same routine and complement each other for a skin-evening effect.

How do I store vitamin C products optimally?

Store vitamin C products in a cool, dry place away from direct sunlight to maintain stability. A slight discoloration from clear to light yellow is normal due to oxidation and does not affect effectiveness, but if the product turns dark brown, it has oxidized and it’s time for a new bottle.

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