The ONE/SIZE by Patrick Starrr B12 Base Thinner Luminous Vitamin Pearl Boosting Serum is a multi-functional 3-in-1 product that serves as a primer, mixing medium, and serum. It is designed to customize the coverage and finish of any liquid or cream foundation while providing clinically backed skincare benefits. oundation Fortifier: It transforms makeup into skincare by infusing it with antioxidants like Vitamins B12, C, and E to brighten and protect against environmental stress.

Customizable Coverage: You can mix it with full-coverage foundations to sheer them out or adjust their finish for a more radiant look.

Instant Radiance: Formulated with vegan crushed pearls, it provides an immediate, buildable glow and a "lit-from-within" luminosity.

Anti-Aging & Hydration: ClinicallyMakeup Longevity: The water-based, oil-free formula helps grip the skin, preventing foundation breakdown and extending wear. proven to visibly reduce fine lines and wrinkles in just two weeks. It uses Hyaluronic Acid and Beta Glucan for deep hydration and Ceramides to support the skin barrier.

As a Primer: Apply alone to clean skin for a natural, healthy glow.
As a Mixing Medium:
Full Radiant Coverage: Mix 2 pumps of Base Thinner with 2 pumps of foundation.
Sheer Radiant Coverage: Mix 2 pumps of Base Thinner with 1/2 pump of foundation.