111SKIN Black Diamond Vitamin C Brightening Booster – Brightening Face Serum (20 ml)

The 111SKIN Black Diamond Vitamin C Brightening Booster is a concentrated, customizable brightening treatment designed to amplify the radiance of your existing routine. A high-performance Vitamin C complex paired with NAC Y²™ delivers visible brightening in days, not months.

Who It Is For

Designed for clients with dullness, uneven tone, post-summer pigmentation, or fatigued-looking skin who want a targeted brightening boost without overhauling their full regimen.

Targets: dullness, uneven tone, hyperpigmentation, post-summer pigment, fatigue.

Key Benefits

• Visibly brightens the complexion in as little as a few days
• Targets the look of uneven tone and dark spots
• Customizable — add to your serum or moisturizer
• NAC Y²™ antioxidant defense
• Lightweight, non-irritating texture

The Le Petit Spa Standard

The booster our team at Le Petit Spa Charlotte recommends to clients chasing visible radiance. Pair with a brightening facial for accelerated results.

Step 1: Begin with cleansed skin.
Step 2: Dispense 2 to 3 drops onto fingertips, or mix into your serum or moisturizer.
Step 3: Press evenly across face, focusing on areas of dullness or uneven tone.
Step 4: Follow with your 111SKIN moisturizer.
Step 5: In the morning, finish with broad-spectrum SPF 30 or higher.

Use daily, morning and/or evening, or as a targeted brightening boost when skin looks dull or fatigued.

Key Ingredients

High-Performance Vitamin C Complex: Brightens visibly and supports an even, luminous complexion.
NAC Y²™ (N-Acetyl Cysteine complex): Antioxidant defense to support and stabilize the brightening effect.
Niacinamide: Refines and brightens tone.
Hyaluronic Acid: Plumps and hydrates.
Liquorice Root Extract: Helps soften the look of dark spots.

Ingredient Note: Ingredients may change from time to time. Please refer to the product packaging for the most current and complete ingredient list before use.

Who is the Brightening Booster for?
Clients with dullness, uneven tone, post-summer pigmentation, or fatigued-looking skin who want a targeted brightening boost.

How do I use a booster?
Mix 2 to 3 drops into your serum or moisturizer, or apply alone after cleansing on dull days.

How often should I use it?
Daily or as needed, morning and/or evening.

Can I use it with my 111SKIN serum?
Yes — layer it under or mix it with your Black Diamond Serum or other 111SKIN serum.

Is daytime SPF required?
Yes — brightening Vitamin C makes skin more receptive to UV light. Always finish with broad-spectrum SPF 30 or higher.

How long does the 20ml bottle last?
With daily use, approximately 2 to 3 months.

We love a booster that lets clients customize — not every routine needs a full re-build. Our team at Le Petit Spa Charlotte reaches for the Vitamin C Brightening Booster when a client wants visible radiance fast, or after travel and stretches of dullness. It pairs beautifully with our brightening facials.