Serum C5 15% Multi-C Complex

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$52.00

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Made fresh for your order — ready within 3 business days
15% Multi-C Complex · 1 fl. oz.

Serum C5

Five distinct forms of Vitamin C. One comprehensive formula. Engineered to deliver multi-depth brightening while maintaining absolute barrier comfort.

5 Forms of Vitamin C

By combining five stable derivatives, the formula ensures active Vitamin C is delivered to every layer of the skin—covering the biological gaps that a single form misses.

One form of Vitamin C covers one angle.
Serum C5 covers five.

Standard Vitamin C serums often rely on a single, high-concentration active. However, your skin is a multi-layered organ with varying needs. Some layers are water-soluble, others are lipid-rich. To move the needle on visible brightness and tone, you need a formula that can navigate this entire landscape.

Serum C5 utilizes a 15% concentration of five stable derivatives. Each form is chosen for its specific biological mission: some provide immediate surface protection, while others penetrate deeply to support collagen synthesis. This "staggered" approach ensures sustained activity over many hours, rather than a single, irritating spike.

We fortified this complex with Alpha-Arbutin and Lactobacillus Ferment, creating a serum that is powerful enough to produce visible results, yet gentle enough for daily morning use—even for skin that has historically found Vitamin C too aggressive.

Hero Ingredients
01
3-O-Ethyl Ascorbic Acid
Deep Lipid Penetration
An oil-soluble form of Vitamin C designed to penetrate the skin's lipid layers. It delivers antioxidant and brightening activity to the epidermis at depths that standard water-soluble forms cannot reach.
02
Ascorbyl Glucoside
Sustained Release
Converts gradually once absorbed, providing a steady supply of brightening activity throughout the day. It works in the skin's water-soluble layers to provide a continuous glow.
03
Sodium Ascorbyl Phosphate
Surface Defense
Activates at the surface for immediate antioxidant protection. It is uniquely microbiome-friendly and particularly effective at addressing the appearance of post-breakout marks.
04
Alpha-Arbutin
Tone Calibration
While not a Vitamin C, Alpha-Arbutin provides a critical sixth mechanism. It works through an independent biological pathway to help visibly even out skin tone and inhibit dark spot formation.
How to use it

Serum C5 is a high-potency formula. If you are new to concentrated Vitamin C, a gradual introduction is the most effective approach.

Morning only
After cleansing, press 3–4 drops into clean skin. Allow it to absorb fully for 60 seconds before layering moisturizer or SPF.
The adjustment phase
If your skin is sensitive, start with 3 mornings per week. While C5 is designed for comfort, a short adjustment period ensures your barrier remains resilient.
Full integration
Once adjusted, move to daily morning use. The oil-soluble components benefit from consistent daily application as they build up in the skin over time.
What to expect
Antioxidant protection starts immediately. Visible evening of skin tone typically becomes noticeable after four weeks of consistent use. SPF 30+ is essential every morning to protect the brightening results.
Full Ingredients (INCI)

Aqua/Water/Eau, 3-O-Ethyl Ascorbic Acid, Ascorbyl Glucoside, Pentylene Glycol, Lactobacillus Ferment, Alpha-Arbutin, Sodium Hyaluronate, Sodium Ascorbyl Phosphate, Magnesium Ascorbyl Phosphate, 3-Glyceryl Ascorbate, Arginine, Ectoin, Trehalose, Caprylyl Glycol, Allantoin, Sodium Phytate, Lactic Acid, Citric Acid.

A Few Pro-Tips

A note on color

Serum C5 has a naturally stable, pale yellow tint. Unlike older Vitamin C technologies that turn orange when they oxidize, this pale yellow is exactly how the active derivatives are intended to look.

The Daily Driver Duo

For the ultimate morning routine, layer Serum C5 under Palo Duro Barrier Cream. The cream seals in the Vitamin C complex and provides the lipid structure needed for deep antioxidant absorption.

Freshness matters
Concentrated actives perform best when fresh.

Vitamin C derivatives are sensitive to light and heat. We blend C5 to order to guarantee the 15% concentration remains at peak potency from the moment it arrives at your door.

Serum C5 15% Multi-C Complex

Serum C5 15% Multi-C Complex

$52.00

$52.00

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