Potent vitamin c is clinically proven to have anti ageing benefits medik8 ce thione helps protect the skin against free radicals the main cause of photo ageing while minimising the formation of dark spots for a visibly brighter skin tone and an improved texture and firmness unlike any other vitamin c serum medik8 ce thione uses medik8s trademark rechargeable vitamin c concept to ensure every drop of vitamin c in the serum is fresh and highly potent ensuring you get the results that vita