Supreme C Vitamin C Concentrate Serum


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The most powerful Vitamin C serum you’ll ever meet.

This single-ingredient serum is made with 100% THD Ascorbate, a potent-yet-gentle Vitamin C derivative crafted in Japan. Refined through a multi-step process for unparalleled stability and potency, this springy gel-oil texture absorbs 3x more efficiently than traditional vitamin C for results you can see. 

This antioxidant-rich powerhouse works to diminish hyperpigmentation and supports skin’s natural collagen. Skin feels instantly hydrated, supple, looks brighter and visibly more even in just 2 weeks.

Safe for all skin types, including sensitive. No fragrance. Non-comedogenic. Clinically and Dermatologist tested.

No silicones, no parabens, no PEGS, no phthalates. No added fragrance. Gluten free. Vegan. No animal testing. 


20ml / 0.67 fl oz



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Apply 1-2 pumps onto cleansed skin morning and/or night. If you have oily skin, Westman Atelier recommends using Suprême C at night. 

If using in combination with Skin Activator, apply Skin Activator first and follow with Suprême C.

Tip! Wait until the product is fully absorbed before applying makeup or coming into direct contact with fabric or sheets. Absorption time is different for everyone and depends on your preferences before moving onto a step like foundation application.

Ingredient: Tetrahexyldecyl Ascorbate

*Please Note: This ingredient list is subject to change. Please refer to the product packaging for the most up-to-date ingredient list.