"Sandwich" Technique for Sensitive Skin Put a thin layer of a mild, moisturising eye cream or balm around your eyes and a rich lip balm around your mouth before you apply your vitamin C serum to ...

"Before applying any new product, especially one containing an active ingredient like Vitamin C, always perform a patch test. Apply a small amount of the serum ... and looks after each application.

Beauty junkies have been excited to discover that the patent on a cult vitamin C serum dubbed the industry ... research behind the cult-beauty buy before it even hit shelves 20 years ago ...

"Apply your Vitamin C serum to clean, dry skin after cleansing and toning, but before heavier moisturisers and sunscreen. This allows for optimal absorption." "Always follow up with a gentle ...

SkinCeuticals' vitamin C serum patent expired ... the standard 20 years after it was issued. Since then, the company has removed several references to the patent from its product page, a review ...

The internet is ablaze after the patented formula of a “gold ... Beauty junkies have been excited to discover that the patent on a cult vitamin C serum dubbed the industry’s ‘gold standard ...