Medik8 C-Tetra Advanced

A high-strength, skin-brightening vitamin C serum that visibly improves skin tone, texture and fine lines in just 7 days*.

 

With 20% stabilised vitamin C and phyto exosomes, this fast-absorbing formula defends against environmental damage—without disrupting your skin barrier. Ideal for dull, uneven or ageing skin.

 

 

Important: This is not a beginner formula. It’s best suited to those who’ve already built up Vitamin C tolerance. Not sure where to begin? C-Tetra is our go-to for Vitamin C newcomers — gentle, effective, and skin-confidence-building.