I know its meant to be 60 plus [ I think] but thought i would give the neck serum a try as its just out today. Was scouring for voucher codes as its £28 for 30 ml. Found one and thought i would share:
SERUMS5
It takes £5 off your bill as long as you buy a serum [doesnt have to be that one] You can also still do the 3 for 2 according to the code.