The Duo

The Duo by Lenox & Sixteenth combines two of the brand’s hero treatment serums in full-size formulas: The Preservationist Vitamin C Cream Serum and The Laser Serum Triple Acid Concentrate. This powerful pairing is designed to brighten, resurface, and support healthier-looking skin by targeting visible concerns like dullness, uneven tone, rough texture, and early signs of aging. Together, these treatments help reveal a smoother, more radiant-looking complexion.

Key Benefits

• Includes two full-size Lenox & Sixteenth treatment essentials

• Helps brighten the appearance of dull, uneven-looking skin

• Resurfaces and refines the look of skin texture

• Supports a smoother, more radiant complexion

• Helps improve the appearance of fine lines and signs of aging

• Promotes a more even-looking skin tone

• Provides antioxidant protection and skin-supporting benefits

• Creates a professional-inspired treatment routine at home

Ideal For

• Dull or lackluster-looking skin

• Uneven tone and texture

• Fine lines and visible signs of aging

• Rough or congested-looking skin

• Loss of radiance and smoothness

• Anyone looking to combine exfoliation and brightening treatments

How to Use

Morning

• Apply The Preservationist Vitamin C Cream Serum to clean, dry skin.

• Follow with moisturizer if needed.

• Finish with sunscreen.

Evening

• Apply The Laser Serum Triple Acid Concentrate to clean, dry skin 1–3 nights per week.

• Follow with a nourishing moisturizer.

• Increase frequency gradually as skin builds tolerance.

Tip: Avoid using The Laser Serum on the same evening as other strong exfoliating or retinoid products unless directed by a skincare professional.

What's Included

• The Preservationist Vitamin C Cream Serum (Full Size): A cream-serum hybrid formulated with Vitamin C, niacinamide, peptides, plant-derived exosomes, ceramides, and squalane to brighten, hydrate, and support firmer-looking skin.

• The Laser Serum Triple Acid Concentrate (Full Size): An advanced resurfacing serum formulated with lactic acid, glycolic acid, and mandelic acid to exfoliate, refine texture, and reveal a smoother-looking complexion.

Key Ingredients

• Vitamin C: Helps brighten the appearance of skin and provides antioxidant support.
• Lactic Acid: Gently exfoliates while helping maintain skin hydration and softness.
• Glycolic Acid: Helps smooth texture and improve the appearance of radiance.
• Mandelic Acid: Helps refine the appearance of pores and uneven-looking tone.
• Niacinamide: Helps support the skin barrier and improve the appearance of uneven tone.
• Peptides: Help support the appearance of firmness and elasticity.
• Plant-Derived Exosomes: Help support healthier-looking skin quality.
• Ceramides & Squalane: Help nourish and strengthen the skin barrier.