G.M. Collin Antioxidant 20 Serum

G.M. Collin Antioxidant 20 Serum is a professional-tier 20% antioxidant complex from the G.M. Collin Medical Line - formulated to neutralize the free radicals, UV stress, and environmental pollutants that drive premature aging, dullness, and uneven skin tone. The lightweight serum absorbs cleanly and layers under SPF for maximum daily protection.

Why We Love It at Le Petit Spa
We recommend this Medical Line serum to clients who want clinical-grade antioxidant protection as the foundation of their morning routine. It's a favorite for city dwellers and frequent travelers whose skin takes on extra environmental stress day to day.

Who It Is For: Anyone with visible signs of environmental damage - sun spots, dullness, fine lines, loss of radiance, uneven tone. Particularly valuable for city dwellers, frequent travelers, and clients investing in in-clinic anti-aging treatments who want to extend results.

Key Benefits: The 20% antioxidant complex provides clinical-grade free radical defense, helping prevent and visibly improve the appearance of oxidative damage. Brightens overall complexion, fades surface pigmentation over time, supports collagen integrity by protecting the dermal matrix, and primes the skin to perform better with every other active you layer on top.

How It Fits Your Routine: Apply 4–6 drops every morning after cleansing, before moisturizer and SPF. For best long-term anti-aging results, pair with A.G.E. Skin Defense Cream and a 0.5% or 1% Retinol Complex Night Cream at night.

At a Glance

• Size: 30 ml
• Category: Serums
• Targets: Fine Lines & Aging, Dark Spots, Dullness & Texture, Sun Damage
• Skin Type: All Skin Types

Key Ingredients

• 20% Vitamin C (19% L-Ascorbic Acid USP and 1% Sodium Ascorbate): Antioxidant.
• Ergothioneine (EGT): Antioxidant.
• Matrixyl® 3000 (palmitoyl tripeptide-1, palmitoyl tetrapeptide-7): Minimizes the appearance of wrinkles.

How to Use

Daily, morning and/or evening, on well cleansed skin, apply 4 to 5 drops in palm of hand and use fingertips to massage a thin layer on face and neck. For external use only, avoid direct contact with the eyes.

Ingredient and usage information published by the manufacturer.

FAQ

Can I use this with retinol?
Yes, it's designed to pair with A.G.E. Skin Defense Cream during the day and a Retinol Complex Night Cream in the evening for a complete anti-aging routine.

Is 20% Vitamin C too strong for sensitive skin?
The formula is well-tolerated by most skin types, but sensitive or reactive skin should patch test first or consult your esthetician.

When should I apply this?
Every morning after cleansing, before moisturizer and SPF.

Can I layer SPF over this?
Yes, it's specifically designed to layer cleanly under SPF for maximum daily protection.

Will this help with dark spots?
Yes, it can help fade surface pigmentation over time as part of a consistent routine.

How is this different from a regular Vitamin C serum?
This is a higher-potency, professional-tier 20% antioxidant complex from the Medical Line, offering clinical-grade strength.